A TSA agent checks a bag at a security checkpoint area at Midway International Airport last month. The new federal government guidelines on racial and religious profiling won't apply to the TSA. Nam Y. Huh/AP hide caption

itoggle caption Nam Y. Huh/AP

The Quick Stop convenience store in Miami Gardens, Fla., was equipped with video cameras that recorded many questionable encounters and arrests by the police. The city's police chief resigned Wednesday. Lynne Sladky/AP hide caption

itoggle caption Lynne Sladky/AP

A crowd gathers at a press conference and rally in front of Manhattan federal court to vocalize their objection to the stop and frisk policy by the police Department Wednesday, March 27, 2013, in New York. The Center for Constitutional Rights has brought a lawsuit on behalf of four black plaintiffs who claim they were stopped by police because of their race. (AP Photo/ Louis Lanzano) Louis Lanzano/ASSOCIATED PRESS hide caption

itoggle caption Louis Lanzano/ASSOCIATED PRESS