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Glenn Davis marches with about 100 other protesters and fast food workers demanding a wage increase during a demonstration in front of a McDonalds restaurant in Philadelphia on Thursday morning May 15, 2014. (AP Photo/Philadelphia Daily News, Alejandro A. Alvarez) ( Fast Food Protests )

DENVER, COLORADO - MAY 15: Lucia Melgarejo of Denver speaks to fast food workers and supporters rallying outside McDonald's at 16th St. and Cleveland Pl. in Denver. Fast food workers across the nation rallied for better pay and the right to form unions on Thursday, May 15, 2014. (Photo by Patrick Traylor/The Denver Post) ( mcdonalds-protest )

Long John Silver employee Antwon Brown, 31, joins fellow fast food workers and supporters in a protest outside a Krispy Kreme store, Thursday, May 15, 2014, in Atlanta. (AP Photo/David Goldman) ( Fast Food Protests )

Hattie Coleman sings protest chants during a rally for fast food workers in Miami, Thursday, May 15, 2014. (AP Photo/J Pat Carter) ( Fast Food Protests )

Fast food workers and activists demonstrate outside McDonald's downtown flagship restaurant on May 15, 2014 in Chicago, Illinois. (Photo by Scott Olson/Getty Images) ( 490786639 )

Fast food workers protest for higher wages outside a branch of McDonalds in central London on May 15, 2014. Fast-food restaurant employees held a global day of protest and strike action in a push for better pay and conditions. AFP PHOTO / CARL COURT/AFP/Getty Images ( 529786935 )

Protesters demanding higher wages for fast food workers chant during a massive rally on May 15, 2014 in New York City. (Photo by Andrew Burton/Getty Images) ( 490816235 )

Protesters demanding higher wages for fast food workers chant during a massive rally on May 15, 2014 in New York City. (Photo by Andrew Burton/Getty Images) ( 490816239 )

Protesters demanding higher wages for fast food workers dance to the music of a drum circle during a massive rally on May 15, 2014 in New York City. (Photo by Andrew Burton/Getty Images) ( 490816241 )

Maria Mejia (L) and others join in a fast food workers protest in front of a Wendy's restaurant on May 15, 2014 in Miami, Florida. The protesters were part of a nation wide movement to show support for fast food workers wages of $15 an hour and what they say is a need for better working conditions. (Photo by Joe Raedle/Getty Images) ( 490842127 )

Protesters demanding higher wages for fast food workers chant during a massive rally on May 15, 2014 in New York City. (Photo by Andrew Burton/Getty Images) ( 490842237 )

DENVER, COLORADO - MAY 15: Kevin Abels, Exec. Dir., FRESC: Good Jobs, Strong Communities, speaks to protesting crowd inside the McDonald's at 16th St. and Cleveland Pl. in Denver, Thursday, May 15, 2014. Fast food workers across the nation rallied Thursday for better pay and the right to form unions (Photo by Patrick Traylor/The Denver Post) ( mcdonalds-protest )

DENVER, COLORADO - MAY 15: Luz Esmeralda Pina Tellez (Center), 11, holds a sign during a rally outside McDonald's at 16th St. and Cleveland Pl. in Denver. She and her brother were supporting their mother Yolanda Tellez, who is a fast food worker. Fast food workers across the nation rallied for better pay and the right to form unions on Thursday, May 15, 2014. (Photo by Patrick Traylor/The Denver Post) ( mcdonalds-protest )

Selmira Wilson who said she works for McDonald's joins in a fast food workers protest in front of a Wendy's restaurant on May 15, 2014 in Miami, Florida. (Photo by Joe Raedle/Getty Images) ( 490842157 )

People join in a fast food workers protest on May 15, 2014 in Miami, Florida. (Photo by Joe Raedle/Getty Images) ( 490842185 )

People join in a fast food workers protest on May 15, 2014 in Miami, Florida. (Photo by Joe Raedle/Getty Images) ( 490842189 )

Protesters demanding higher wages for fast food workers chant during a massive rally outside a Domino's Pizza store on May 15, 2014 in New York City. (Photo by Andrew Burton/Getty Images) ( 490842231 )

A protester demanding higher wages for fast food workers takes a brief moment of rest during a massive rally on May 15, 2014 in New York City. (Photo by Andrew Burton/Getty Images) ( 490842239 )

Velma Conrelius protests for higher wages outside a McDonalds restaurant in Detroit Thursday, May 15, 2014. Calling for higher pay and the right to form a union without retaliation, fast-food chain workers protested Thursday as part of a wave of strikes and protests in 150 cities across the U.S. and 33 additional countries on six continents. (AP Photo/Paul Sancya) ( APTOPIX Fast Food Protests )

Protesters demanding higher wages for fast food workers dance to the music of a drum circle during a massive rally on May 15, 2014 in New York City. (Photo by Andrew Burton/Getty Images) ( 490842243 )

Protesters demanding higher wages for fast food workers chant during a massive rally on May 15, 2014 in New York City. (Photo by Andrew Burton/Getty Images) ( 490842245 )

Protesters demanding higher wages for fast food workers are handed plated lunches during a massive rally on May 15, 2014 in New York City. The lunch consisted of half a sandwich, chips and a bottle of water. (Photo by Andrew Burton/Getty Images) ( 490842247 )

Protesters demanding higher wages for fast food workers chant during a massive rally outside a Domino's Pizza store on May 15, 2014 in New York City. (Photo by Andrew Burton/Getty Images) ( 490842251 )

Protesters demanding higher wages for fast food workers chant during a massive rally on May 15, 2014 in New York City. (Photo by Andrew Burton/Getty Images) ( 490842253 )

Fast food workers and activists demonstrate outside McDonald's downtown flagship restaurant on May 15, 2014 in Chicago, Illinois. The demonstration was one of several nationwide calling for wages of $15 per hour and better working conditions for fast food workers. (Photo by Scott Olson/Getty Images) ( 490858217 )

New York City Comptroller Scott Stringer speaks to protesters demanding higher wages for fast food workers during a massive rally outside a Domino's Pizza store on May 15, 2014 in New York City. (Photo by Andrew Burton/Getty Images) ( 490842257 )

Protesters picket for higher wages outside a McDonalds restaurant in Detroit Thursday, May 15, 2014. (AP Photo/Paul Sancya) ( Fast Food Protests )

Fast food workers and activists demonstrate outside McDonald's downtown flagship restaurant on May 15, 2014 in Chicago, Illinois. (Photo by Scott Olson/Getty Images) ( 490858221 )

Carmen Burley-Rawls, 20, shouts to passing motorists during a protest outside a Long John Silver's and McDonald's restaurant, Thursday, May 15, 2014, in Atlanta. (AP Photo/David Goldman) ( Fast Food Protests )

Fast food workers Danielle Wilson, left, and Justice Wallace march with about 100 other protesters demanding a wage increase during a demonstration in front of a McDonalds restaurant in North Philadelphia on Thursday morning May 15, 2014. (AP Photo/Philadelphia Daily News, Alejandro A. Alvarez) ( Fast Food Protests )

More than 150 fast-food workers and protestors chant slogans promoting higher pay outside a McDonald's restaurant in St. Louis, Thursday, May 15, 2014. (AP Photo/St. Louis Post-Dispatch, Laurie Skrivan) ( Fast Food Protests )

Shermale Humphrey shouts slogans into a megaphone, as she leads a group of fast-food workers protesting for better wages on Thursday, May 15, 2014, inside a McDonald's in St. Louis. (AP Photo/St. Louis Post-Dispatch, Laurie Skrivan) ( Fast Food Protests )

Fast food workers and activists demonstrate outside McDonald's downtown flagship restaurant on May 15, 2014 in Chicago, Illinois. The demonstration was one of several nationwide calling for wages of $15 per hour and better working conditions for fast food workers. (Photo by Scott Olson/Getty Images) ( 490858223 )

Fast food workers protest for higher wages and rights outside a branch of McDonalds in central London on May 15, 2014. Fast-food restaurant employees held a global day of protest and strike action in a push for better pay and conditions. AFP PHOTO / CARL COURT/AFP/Getty Images ( 529786918 )

Fast food workers protest for higher wages and rights outside a branch of McDonalds in central London on May 15, 2014. Fast-food restaurant employees held a global day of protest and strike action in a push for better pay and conditions. AFP PHOTO / CARL COURT/AFP/Getty Images ( 529786927 )

Long John Silver's employee Antwon Brown, 31, uses a bullhorn while wearing a shirt advocating for higher wages during a protest outside a Long John Silver's restaurant, Thursday, May 15, 2014, in Atlanta. (AP Photo/David Goldman) ( Fast Food Protests )

DENVER, COLORADO - MAY 15: Denver fast food workers and supporters exit the McDonald's at 16th St. and Cleveland Pl. in Denver. Fast food workers across the nation rallied for better pay and the right to form unions on Thursday, May 15, 2014. (Photo by Patrick Traylor/The Denver Post) ( mcdonalds-protest )

Burger King employee Brittany Buckhannon, 24, right, demonstrates during a protest for higher wages and worker's unions outside a McDonald's restaurant, Thursday, May 15, 2014, in Atlanta. (AP Photo/David Goldman) ( Fast Food Protests )

Fast-food workers hold placards in support to an increase of the fast food workers minimum wage in New York, May 15, 2014. Fast-food workers around the world staged a global protest actions to demand an increase of their minimum wage to 15 USD an hour. AFP PHOTO/Emmanuel DUNAND/AFP/Getty Images ( 529788117 )

Fast-food workers take part in a protest to demand an increase of the fast food workers minimum wage in New York, May 15, 2014. AFP PHOTO/Emmanuel DUNAND/AFP/Getty Images ( 529788308 )