Allentown, PA, July 20th, 2013. Judith Joy Ross, left, of Bethlehem, and Darlene Banks, right, of Pottstown, hold signs during a "Justice for Trayvon" vigil at the Edward N. Cahn U.S. Courthouse & Federal Building in Allentown, Pa. on Saturday, July 20, 2013. Martin was a black Florida teen who was shot and killed by George Zimmerman, who said he shot the 17-year-old in self-defense. Zimmerman was acquitted of all charges. (AP Photo/The Express-Times, Matt Smith) ( Neighborhood Watch Rallies )