Police wearing riot gear walk toward a man with his hands raised Aug. 11 in Ferguson, Mo. Renewed calls for police departments to hire more minorities have followed the shooting there of a black man by a white police officer. Jeff Roberson/AP hide caption

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A police officer guards a closed street where protesters and looters rampaged businesses following the grand jury decision in the fatal shooting of Michael Brown, in Ferguson, Mo., on Tuesday. Jewel Samad/AFP/Getty Images hide caption

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Police gather on the street as protesters react after the announcement of the grand jury decision Monday in Ferguson, Mo. A grand jury decided not to indict Ferguson police Officer Darren Wilson in the death of Michael Brown, the unarmed, black 18-year-old whose fatal shooting sparked sometimes violent protests. Charlie Riedel/AP hide caption

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Protesters and law enforcement officers face off during a protest outside the Ferguson Police Department in October. Ferguson police statistics show the department arrest blacks at a higher rate than other racial groups — but that disparity is true for police departments across the country. Charles Rex Arbogast/AP hide caption

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Some businesses in Ferguson have boarded up their windows in anticipation of the grand jury announcement whether to criminally charge Officer Darren Wilson in the killing of 18-year-old Michael Brown. Jeff Roberson/AP hide caption

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Children watch from their home in Ferguson, Mo., on Aug. 20 as people march about a mile to the police station to protest the shooting of Michael Brown. Brown's shooting in the middle of a street by a Ferguson police officer on Aug. 9 sparked protests, riots and looting in the St. Louis suburb. Some people are ready to leave the troubled city. Others say they will remain no matter what. Charlie Riedel/AP hide caption

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Michael Brown's parents Lesley McSpadden (left) and Michael Brown Sr. (right) flank attorney Anthony Gray as he speaks at a news conference held Tuesday, one month after Michael Brown was shot and killed in Ferguson, Mo. Jeff Roberson/AP hide caption

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Some attendees at Michael Brown's funeral Monday in St. Louis wore ties and buttons depicting the 18-year-old, who was killed two weeks ago in Ferguson, Mo. Robert Cohen/AP hide caption

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Supporters of the fatally shot Michael Brown hold hands in solidarity as they are led by Tracy Martin, father of Trayvon Martin, at the Peace Fest rally Sunday in St. Louis. Adrees Latif /Reuters/Landov hide caption

itoggle caption Adrees Latif /Reuters/Landov