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TOPSHOT - Demonstators march through the city to call for justice for Alton Sterling and Philandro Castile as they rally in the middle of Times Square July 7, 2016 in New York. Black motorist Philando Castile, 32, a school cafeteria worker, was shot at close range by a Minnesota cop and seen bleeding to death in a graphic video shot by his girlfriend that went viral Thursday, the second fatal police shooting to rock America in as many days. / AFP PHOTO / TIMOTHY A. CLARY (Photo credit should read TIMOTHY A. CLARY/AFP/Getty Images)

TOPSHOT - Demonstators march through the city to call for justice for Alton Sterling and Philandro Castile as they rally in the middle of Times Square July 7, 2016 in New York. Black motorist Philando Castile, 32, a school cafeteria worker, was shot at close range by a Minnesota cop and seen bleeding to death in a graphic video shot by his girlfriend that went viral Thursday, the second fatal police shooting to rock America in as many days. / AFP PHOTO / TIMOTHY A. CLARY (Photo credit should read TIMOTHY A. CLARY/AFP/Getty Images)
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AFP TIMOTHY A. CLARY

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Stop Police Brutality and Ferguson is Everywhere reads a poster carried by Protesters who take to the streets of New York and nationwide against the police killing of black men, demanding Justice for All in what organizers, including Al Sharpton, hope will be one of the largest demonstrations against police tactics used on black men and the recent police action against minorities, including the deaths of Michael Brown and Eric Garner.Stops Police Brutality and Murder say the signs. New York, (Photo by Viviane Moos/Corbis via Getty Images)

Stop Police Brutality and Ferguson is Everywhere reads a poster carried by Protesters who take to the streets of New York and nationwide against the police killing of black men, demanding Justice for All in what organizers, including Al Sharpton, hope will be one of the largest demonstrations against police tactics used on black men and the recent police action against minorities, including the deaths of Michael Brown and Eric Garner.Stops Police Brutality and Murder say the signs. New York, (Photo by Viviane Moos/Corbis via Getty Images)
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Corbis News Viviane Moos

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BATON ROUGE, LA - JULY 09: Lael Montgomery (C) and other demonstrators gather after marching at the Louisiana Capitol to protest the shooting of Alton Sterling on July 9, 2016 in Baton Rouge, Louisiana. Alton Sterling was shot by a police officer in front of the Triple S Food Mart in Baton Rouge on July 5th, leading the Department of Justice to open a civil rights investigation. (Photo by Mark Wallheiser/Getty Images)

BATON ROUGE, LA - JULY 09: Lael Montgomery (C) and other demonstrators gather after marching at the Louisiana Capitol to protest the shooting of Alton Sterling on July 9, 2016 in Baton Rouge, Louisiana. Alton Sterling was shot by a police officer in front of the Triple S Food Mart in Baton Rouge on July 5th, leading the Department of Justice to open a civil rights investigation. (Photo by Mark Wallheiser/Getty Images)
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Getty Images News Mark Wallheiser

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BATON ROUGE, LA -JULY 07: Sandra Sterling (R), Alton Sterling's aunt, visits his memorial at the Triple S Food Mart July 7, 2016 in Baton Rouge, Louisiana. Sterling was shot by a police officer in front of the Triple S Food Mart in Baton Rouge on July 5th, leading the Department of Justice to open a civil rights investigation. (Photo by Mark Wallheiser/Getty Images)

BATON ROUGE, LA -JULY 07: Sandra Sterling (R), Alton Sterling's aunt, visits his memorial at the Triple S Food Mart July 7, 2016 in Baton Rouge, Louisiana. Sterling was shot by a police officer in front of the Triple S Food Mart in Baton Rouge on July 5th, leading the Department of Justice to open a civil rights investigation. (Photo by Mark Wallheiser/Getty Images)
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Getty Images News Mark Wallheiser