People gather in front of the federal court in Washington Saturday, July 20, 2013, as they demonstrate in the “Justice for Trayvon -100 City Vigil”. Friday, just before the scheduled vigils and rallies in 100 U.S. cities, President Barack Obama spoke about the raw reaction to the acquittal in a Florida court of the man who shot and killed 17-year-old Trayvon Martin. Saying “Trayvon Martin could have been me, 35 years ago,” Obama said he had to speak because America needs to understand why so many of her citizens are in pain about Martin’s death, and why black citizens, especially, are having a hard time looking at this as anything other than the latest manifestation of what he called “a history that doesn’t go away.” (AP Photo/Manuel Balce Ceneta)