Don't worry, the Knational Knife Association (KKA) will protect our right to own and use knives.
The perp carried dolls and puppets around with him and talked to them. I'll bet the puppet told him to do it therefore he isn't guilty.
Ban assault knives with their military grade rubber handles and high strength alloys designed to cut human flesh! No one needs knives over 3 inches for peaceful purposes!
Meanwhile I'm sure something else more heinous happened that's not even going to hit the news.