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Rapper Nelly uses a microphone to speak to demonstrators protesting the shooting death of Michael Brown on August 18, 2014 in Ferguson, Missouri. Protesters have been vocal asking for justice in the shooting death of Michael Brown by a Ferguson police officer on August 9th. (Photo by Joe Raedle/Getty Images) ( 453792756 )

Rapper Nelly joins demonstrators protesting the shooting death of Michael Brown as they make their voices heard on August 18, 2014 in Ferguson, Missouri. Protesters have been vocal asking for justice in the shooting death of Michael Brown by a Ferguson police officer on August 9th. (Photo by Joe Raedle/Getty Images) ( 453792478 )

Demonstrators protesting the shooting death of Michael Brown listen as rapper, Nelly, speaks to them on August 18, 2014 in Ferguson, Missouri. Protesters have been vocal asking for justice in the shooting death of Michael Brown by a Ferguson police officer on August 9th. (Photo by Joe Raedle/Getty Images) ( 453792726 )

Rapper Nelly joins demonstrators protesting the shooting death of Michael Brown as they make their voices heard on August 18, 2014 in Ferguson, Missouri. Protesters have been vocal asking for justice in the shooting death of Michael Brown by a Ferguson police officer on August 9th. (Photo by Joe Raedle/Getty Images) ( 453792480 )

Demonstrators protesting the shooting death of Michael Brown listen as rapper, Nelly, speaks to them on August 18, 2014 in Ferguson, Missouri. Protesters have been vocal asking for justice in the shooting death of Michael Brown by a Ferguson police officer on August 9th. (Photo by Joe Raedle/Getty Images) ( 453792580 )

Rapper Nelly, center, walks the streets with protesters Monday, Aug. 18, 2014, in Ferguson, Mo. The Aug. 9 shooting of Michael Brown by police has touched off rancorous protests in Ferguson, a St. Louis suburb where police have used riot gear and tear gas and Gov. Jay Nixon ordered the National Guard to help restore order Monday. (AP Photo/Jeff Roberson) ( Police Shooting Missouri )

Rapper Nelly joins demonstrators protesting the shooting death of Michael Brown as they make their voices heard on August 18, 2014 in Ferguson, Missouri. Protesters have been vocal asking for justice in the shooting death of Michael Brown by a Ferguson police officer on August 9th. (Photo by Joe Raedle/Getty Images) ( 453792742 )

Demonstrators protesting the shooting death of Michael Brown listen as rapper, Nelly, speaks to them on August 18, 2014 in Ferguson, Missouri. Protesters have been vocal asking for justice in the shooting death of Michael Brown by a Ferguson police officer on August 9th. (Photo by Joe Raedle/Getty Images) ( 453792752 )

Rapper Nelly joins demonstrators protesting the shooting death of Michael Brown as they make their voices heard on August 18, 2014 in Ferguson, Missouri. Protesters have been vocal asking for justice in the shooting death of Michael Brown by a Ferguson police officer on August 9th. (Photo by Joe Raedle/Getty Images) ( 453792484 )