Bryan Stevenson takes on cases to exonerate people wrongfully convicted. "One of the things that pains me is we have so tragically underestimated the trauma, the hardship we create in this country when we treat people unfairly, when we incarcerate them unfairly, when we condemn them unfairly," he says. Tracy King/iStockphoto hide caption

itoggle caption Tracy King/iStockphoto

A memorial sits at the site of Michael Brown's death in Ferguson, Mo. Any investigation into his shooting by a police officer is likely to take months. Larry W. Smith/EPA/Landov hide caption

itoggle caption Larry W. Smith/EPA/Landov

(From left) Joseph McNeil and Franklin McCain, two of the Greensboro Four who the day before had sat at the "whites only" counter of a Woolworth store, came back on Feb. 2, 1960, with two others — Billy Smith and Clarence Henderson. Jack Moebes/Greensboro News & Record hide caption

itoggle caption Jack Moebes/Greensboro News & Record

President Obama reached out to touch the statue of civil rights icon Rosa Parks during Wednesday's dedication ceremony in the U.S. Capitol. Senate Minority Leader Mitch McConnell, R-Ky., was behind the president. Jason Reed/Reuters /Landov hide caption

itoggle caption Jason Reed/Reuters /Landov