I'm not saying the kid is lying, but you're taking his story more readily. It's a "he said she said" situation, but some are only taking one story.That's from the shooters justification statement...not necessarily reliable...but could be true.
Consider this, it this was an attractive 16 year old girl would she have been shot?
Fault totally still lies with the kid as he should know that blacks shouldn't ring doorbells in white neighborhoods, jog in white neighnorhoods etc as there are just too many armed white racists that think any black person is there to rob them, or rape their family. Best bet is to just do a little "clean up" before they get the chance.