50 years after MLK's assassination, is America moving backward on race relations?

50 years after MLK's assassination, is America moving backward on race relations?  USA TODAY 50 Years Later, Remembering King, and the Battles That Outlived Him  New York Times Time Stopped When Martin Luther King Jr. Was Slain. But The Lorraine At Last Moved Ahead.  HuffPost What we all lost in Memphis: Uneven progress since MLK's murder, and too little focus on our common moral duty  New York Daily NewsFull coverage