I know people argue about this but I swear I did. I was watching TV and this show called "The Building", I think about like some skyscraper in a big city, well the intro had a little text that said "Dedicated to the victims who died June 2nd from a real sniper from this building" like in real life two kids got shot from that building which the show is based off of and I remember reading the little intro before the show started.
Also I am left handed and I hear that has to do with it.