xavier usananga was shot in his backyard. his mom says two men were shooting at each other in the street when her child became another innocent victim. >> take into consideration what you might -- what is the end result and if you're ready to take responsibility for that end result. playing with a gun might be fun, might be something, but do you really know at the end of the day if you take someone's life, what that feels like. >> police say they have arrested a suspect in connection with the shooting. st. louis has the highest murder rate of any big city dating back to 2014. another new york city police officer has died by suicide. he is the ninth so far this year. the second this week. the seventh since june. 56 years old. the officer was a 25 year