FILE - In this Aug. 28, 1963, file photo Dr. Martin Luther King, Jr., center front, marches for civil rights, arms linked in a line of men, in the March on Washington. It wasn’t until the 1960s civil rights movement, exemplified by the historic march, that new laws began strengthening the federal role in civil right protection. Now, the Justice Department is expected to pursue civil rights prosecutions. But in many cases of inflamed racial passions, federal prosecutors don’t find the evidence needed to support civil rights charges. (AP Photo, File)