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Tactical officers fire tear gas on Monday, Aug. 11, 2014, in Ferguson, Mo. Authorities in Ferguson used tear gas and rubber bullets to try to disperse a large crowd Monday night that had gathered at the site of a burned-out convenience store damaged a night earlier, when many businesses in the area were looted. (AP Photo/St. Louis Post-Dispatch, Robert Cohen) ( APTOPIX Police Shooting Missouri )

Police force protestors from the business district into nearby neighborhoods on August 11, 2014 in Ferguson, Missouri. Police responded with tear gas and rubber bullets as residents and their supporters protested the shooting by police of an unarmed black teenager named Michael Brown who was killed Saturday in this suburban St. Louis community. Yesterday 32 arrests were made after protests turned into rioting and looting in Ferguson. (Photo by Scott Olson/Getty Images) ( 453505316 )

Police officers arrest a man who refused to leave when police in riot gear cleared the area of S. Florissant Road and Church Street in downtown Ferguson, Mo., on Monday, Aug. 11, 2014. Hundreds of people marched in front of the Ferguson police station against Saturday's police shooting of Michael Brown. (AP Photo/St. Louis Post-Dispatch, Robert Cohen) ( Police Shooting-Missouri )

A child uses a rag to shield her face from tear gas being fired by police who used it to force protestors from the business district into nearby neighborhoods on August 11, 2014 in Ferguson, Missouri. Police responded with tear gas and rubber bullets as residents and their supporters protested the shooting by police of an unarmed black teenager named Michael Brown who was killed Saturday in this suburban St. Louis community. Yesterday 32 arrests were made after protests turned into rioting and looting in Ferguson. (Photo by Scott Olson/Getty Images) ( 453505314 )

Police lock down a neighborhood, refusing to let people leave on August 11, 2014 in Ferguson, Missouri. Police responded with tear gas as residents and their supporters protested the shooting by police of an unarmed black teenager named Michael Brown who was killed Saturday in this suburban St. Louis community. Yesterday 32 arrests were made after protests turned into rioting and looting in Ferguson. (Photo by Scott Olson/Getty Images) ( 453505306 )

Police lock down a neighborhood on August 11, 2014 in Ferguson, Missouri. Police responded with tear gas as residents and their supporters protested the shooting by police of an unarmed black teenager named Michael Brown who was killed Saturday in this suburban St. Louis community. Yesterday 32 arrests were made after protests turned into rioting and looting in Ferguson. (Photo by Scott Olson/Getty Images) ( 453505170 )

People scatter as police officers fire tear gas on Monday, Aug. 11, 2014, in Ferguson, Mo. Authorities in Ferguson used tear gas and rubber bullets to try to disperse a large crowd Monday night that had gathered at the site of a burned-out convenience store damaged a night earlier, when many businesses in the area were looted. (AP Photo/St. Louis Post-Dispatch, Robert Cohen) ( Police Shooting Missouri )

Protesters are forced by police from the business district into nearby neighborhoods on August 11, 2014 in Ferguson, Missouri. Police responded with tear gas and rubber bullets as residents and their supporters protested the shooting by police of an unarmed black teenager named Michael Brown who was killed Saturday in this suburban St. Louis community. Yesterday 32 arrests were made after protests turned into rioting and looting in Ferguson. (Photo by Scott Olson/Getty Images) ( 453507308 )

With their hands raised, residents gather at a police line as the neighborhood is locked down following skirmishes on August 11, 2014 in Ferguson, Missouri. Police responded with tear gas as residents and their supporters protested the shooting by police of an unarmed black teenager named Michael Brown who was killed Saturday in this suburban St. Louis community. Yesterday 32 arrests were made after protests turned into rioting and looting in Ferguson. (Photo by Scott Olson/Getty Images) ( 453505298 )

Tactical officers fire tear gas on Monday, Aug. 11, 2014, in Ferguson, Mo. Authorities in Ferguson used tear gas and rubber bullets to try to disperse a large crowd Monday night that had gathered at the site of a burned-out convenience store damaged a night earlier, when many businesses in the area were looted. (AP Photo/St. Louis Post-Dispatch, Robert Cohen) ( Police Shooting Missouri )

A child uses a rag to shield his face from tear gas being fired by police who used it to force protestors from the business district into nearby neighborhoods on August 11, 2014 in Ferguson, Missouri. Police responded with tear gas and rubber bullets as residents and their supporters protested the shooting by police of an unarmed black teenager named Michael Brown who was killed Saturday in this suburban St. Louis community. Yesterday 32 arrests were made after protests turned into rioting and looting in Ferguson. (Photo by Scott Olson/Getty Images) ( 453505318 )

Police force protestors from the business district into nearby neighborhoods on August 11, 2014 in Ferguson, Missouri. Police responded with tear gas and rubber bullets as residents and their supporters protested the shooting by police of an unarmed black teenager named Michael Brown who was killed Saturday in this suburban St. Louis community. Yesterday 32 arrests were made after protests turned into rioting and looting in Ferguson. (Photo by Scott Olson/Getty Images) ( 453505308 )

Tear gas hangs in the air as police force protestors from the business district into nearby neighborhoods on August 11, 2014 in Ferguson, Missouri. Police responded with tear gas and rubber bullets as residents and their supporters protested the shooting by police of an unarmed black teenager named Michael Brown who was killed Saturday in this suburban St. Louis community. Yesterday 32 arrests were made after protests turned into rioting and looting in Ferguson. (Photo by Scott Olson/Getty Images) ( 453507286 )

"He was my second cousin. It's just so wrong," said Tony Petty who holds his granddaughter as joins a protest against the police shooting of Michael Brown in front of the Ferguson police station on Monday, Aug. 11, 2014. Marchers are entering a third day of protests. (AP Photo/St. Louis Post-Dispatch, Laurie Skrivan) ( Police Shooting-Missouri )

Protesters are forced by police from the business district into nearby neighborhoods on August 11, 2014 in Ferguson, Missouri. Police responded with tear gas and rubber bullets as residents and their supporters protested the shooting by police of an unarmed black teenager named Michael Brown who was killed Saturday in this suburban St. Louis community. Yesterday 32 arrests were made after protests turned into rioting and looting in Ferguson. (Photo by Scott Olson/Getty Images) ( 453507344 )

Police advance on protestors as they are forced from the business district into nearby neighborhoods on August 11, 2014 in Ferguson, Missouri. Police responded with tear gas and rubber bullets as residents and their supporters protested the shooting by police of an unarmed black teenager named Michael Brown who was killed Saturday in this suburban St. Louis community. Yesterday 32 arrests were made after protests turned into rioting and looting in Ferguson. (Photo by Scott Olson/Getty Images) ( 453505302 )

People flee as police advance on protestors firing tear gas and rubber bullets to force them from the business district into nearby neighborhoods on August 11, 2014 in Ferguson, Missouri. Residents and their supporters were protesting the shooting by police of an unarmed black teenager named Michael Brown who was killed Saturday in this suburban St. Louis community. Yesterday 32 arrests were made after protests turned into rioting and looting in Ferguson. (Photo by Scott Olson/Getty Images) ( 453507296 )

People flee as police advance on protestors firing tear gas and rubber bullets to force them from the business district into nearby neighborhoods on August 11, 2014 in Ferguson, Missouri. Residents and their supporters were protesting the shooting by police of an unarmed black teenager named Michael Brown who was killed Saturday in this suburban St. Louis community. Yesterday 32 arrests were made after protests turned into rioting and looting in Ferguson. (Photo by Scott Olson/Getty Images) ( 453507314 )

St. Louis County police officers stand back to back as they attempt to move a crowd gathered in front of the QuikTrip, Monday, Aug. 11, 2014, in Ferguson, Mo. Authorities in Ferguson used tear gas and rubber bullets to try to disperse a large crowd Monday night that had gathered at the site of a burned-out convenience store damaged a night earlier, when many businesses in the area were looted. (AP Photo/St. Louis Post-Dispatch, Robert Cohen) ( Polce Shooting Missouri )

"This is an shooting of an 18-year boy who was supposed to start school today," said protestor Fiona Wilson of Ferguson , who shouts at the barricade of Missouri State Highway Patrol troopers in front of the Ferguson police station on Monday, Aug. 11, 2014. "I don't want this to be appear as a racial thing. It's a police brutality issue. The officer used excessive force. It's not a black and white thing. That's why I am out here. I want more white people to come out," said Wilson. Marchers are entering a third day of protests against Saturday's police shooting of Michael Brown. (AP Photo/St. Louis Post-Dispatch, Laurie Skrivan) ( Police Shooting-Missouri )

Riot police officers moved down S. Florissant Road in downtown Ferguson, Mo., on Monday, Aug. 11, 2014, as they move demonstrators from the police station after Saturday's police shooting of Michael Brown. (AP Photo/St. Louis Post-Dispatch, Robert Cohen) ( Police Shooting-Missouri )

A man is arrested during a protest of the shooting death of 18-year-old Michael Brown by a Ferguson police officer, outside Ferguson Police Department Headquarters August 11, 2014 in Ferguson, Missouri. Civil unrest broke out as a result of the shooting of the unarmed black man as crowds looted and burned stores, vandalized vehicles and taunted police officers. Dozens were arrested for various infractions including assault, burglary and theft. (Photo by Michael B. Thomas/Getty Images) ( 453492472 )

Demonstrators protest the killing of 18-year-old Michael Brown who was shot by police on Saturday on August 11, 2014 in Ferguson, Missouri. Police responded with tear gas and rubber bullets as residents and their supporters protested the shooting by police of an unarmed black teenager named Michael Brown who was killed Saturday in this suburban St. Louis community. Yesterday 32 arrests were made after protests turned into rioting and looting in Ferguson. (Photo by Scott Olson/Getty Images) ( 453508554 )

Demonstrators protest next to the spot where 18-year-old Michael Brown was shot by police on Saturday on August 11, 2014 in Ferguson, Missouri. Police responded with tear gas and rubber bullets as residents and their supporters protested the shooting by police of an unarmed black teenager named Michael Brown who was killed Saturday in this suburban St. Louis community. Yesterday 32 arrests were made after protests turned into rioting and looting in Ferguson. (Photo by Scott Olson/Getty Images) ( 453507320 )

Demonstrators protest the killing of 18-year-old Michael Brown who was shot by police on Saturday on August 11, 2014 in Ferguson, Missouri. Police responded with tear gas and rubber bullets as residents and their supporters protested the shooting by police of an unarmed black teenager named Michael Brown who was killed Saturday in this suburban St. Louis community. Yesterday 32 arrests were made after protests turned into rioting and looting in Ferguson. (Photo by Scott Olson/Getty Images) ( 453508530 )

Demonstrators protest the killing of 18-year-old Michael Brown who was shot by police on Saturday on August 11, 2014 in Ferguson, Missouri. Police responded with tear gas and rubber bullets as residents and their supporters protested the shooting by police of an unarmed black teenager named Michael Brown who was killed Saturday in this suburban St. Louis community. Yesterday 32 arrests were made after protests turned into rioting and looting in Ferguson. (Photo by Scott Olson/Getty Images) ( 453508534 )

Demonstrators protest the killing of 18-year-old Michael Brown who was shot by police on Saturday on August 11, 2014 in Ferguson, Missouri. Police responded with tear gas and rubber bullets as residents and their supporters protested the shooting by police of an unarmed black teenager named Michael Brown who was killed Saturday in this suburban St. Louis community. Yesterday 32 arrests were made after protests turned into rioting and looting in Ferguson. (Photo by Scott Olson/Getty Images) ( 453508540 )

Arniesha Randall protests the killing of 18-year-old Michael Brown who was shot by police on Saturday on August 11, 2014 in Ferguson, Missouri. Police responded with tear gas and rubber bullets as residents and their supporters protested the shooting by police of an unarmed black teenager named Michael Brown who was killed Saturday in this suburban St. Louis community. Yesterday 32 arrests were made after protests turned into rioting and looting in Ferguson. (Photo by Scott Olson/Getty Images) ( 453508542 )

Marcelle Stewart, left, confronts police officers during a march and rally in downtown Ferguson, Mo. Monday, Aug. 11, 2014. The group marched along the closed street, rallying in front of the town's police headquarters to protest the shooting of 18-year-old Michael Brown by Ferguson police officers. Brown, who was killed in a confrontation with police in the St. Louis suburb, was shot Saturday, Aug. 9, 2014, and died following the confrontation with police. Stewart said she was attending the rally because her son-in-law Jason Moore died after being shot with a taser by police. (AP Photo/Sid Hastings) ( Police Shooting-Missouri )

Aaron Coleman, left, joins other protesters marching on Florissant Road in historic downtown Ferguson, Mo., Monday, Aug. 11, 2014. The group marched along the closed street, rallying in front of the town's police headquarters to protest the shooting of 18-year-old Michael Brown by Ferguson police officers. Brown, who was killed in a confrontation with police in the St. Louis suburb, was shot Saturday, Aug. 9, 2014, and died following the confrontation with police. (AP Photo/Sid Hastings) ( Police Shooting-Missouri )

Marlon Carter, a rap musician from Kansas City, stayed in town after his performance to join a protest over the killing of 18-year-old Michael Brown, who was shot by police on Saturday on August 11, 2014 in Ferguson, Missouri. Police responded with tear gas and rubber bullets as residents and their supporters protested the shooting by police of an unarmed black teenager named Michael Brown who was killed Saturday in this suburban St. Louis community. Yesterday 32 arrests were made after protests turned into rioting and looting in Ferguson. (Photo by Scott Olson/Getty Images) ( 453508512 )

Police guard a Quick Trip gas station that was burned yesterday when protests over the killing of 18-year-old Michael Brown turned to riots and looting on August 11, 2014 in Ferguson, Missouri. Police responded with tear gas and rubber bullets as residents and their supporters protested the shooting by police of an unarmed black teenager named Michael Brown who was killed Saturday in this suburban St. Louis community. Yesterday 32 arrests were made after protests turned into rioting and looting in Ferguson. (Photo by Scott Olson/Getty Images) ( 453508532 )

This Monday, Aug. 11 2014 photo shows debris scattered in front of a QuikTrip store in Ferguson, Mo. that was burned down following a candlelight vigil for 18-year-old Michael Brown, who police say was fatally shot Saturday in a scuffle with police. (AP Photo/St. Louis Post-Dispatch, Laurie Skrivan) ( Police Shooting-Missouri )