I don't know what you're implying, but you're probably wrong.
Looks like there was something personal going on there. I hate that people come in with this stock standard "oh they were the best kids" shit, clearly something had happened to the guy that caused him to target specific people.
http://www.thestar.com/news/canada/2014/04/15/stabbing_at_calgary_house_party_leaves_5_dead.htmlCanadians clearly cannot be trusted with them. Canada always ensured us that this wasn't possible because there was no way someone with a knife could cause this much damage. Only whackjobs from the USA with their guns could possibly do this.
He probably played Grand Theft Auto.