A summer of deadly gun violence started when Missy Scott’s brother walked to a D.C. corner store on a Sunday morning. Melissa "Missy" Scott, 15, stands in front of the mural of her twin brother, Maurice, on a wall of the store where he was shot on May 26 in Southeast Washington. By THE TWINS WERE BORN 60 seconds apart, as if from the very beginning they did not know how to be without each other. Melissa Scott appeared first, and then came her brother, Maurice. Fifteen years later, that was still their routine: Every weekday morning, Melissa would roll out of bed first, emerge from her room...…A summer of deadly gun violence started when Missy Scott’s brother walked to a D.C. corner store on a Sunday morning. Melissa "Missy" Scott, 15, stands in front of the mural of her twin brother, Maurice, on a wall of the store where he was shot on May 26 in Southeast Washington. By THE TWINS WERE BORN 60 seconds apart, as if from the very beginning they did not know how to be without each other. Melissa Scott appeared first, and then came her brother, Maurice. Fifteen years later, that was still their routine: Every weekday morning, Melissa would roll out of bed first, emerge from her room...WW…