http://www.infowars.com/knives-kill-50-in-santa-barbara-massacre,
http://www.npr.org/blogs/thetwo-way/2014/05/25/315698759/uc-santa-barbara-hosts-vigil-for-victims-of-shooting-rampage,
http://abcnews.go.com/US/police-miss-chance-stop-santa-barbara-rampage/story?id=23867478,
http://www.infowars.com/elliot-roger-santa-barbara-killer-parallels-and-numbers
http://en.wikipedia.org/wiki/2014_Calgary_stabbing,
http://www.calgarysun.com/2014/04/15/five-dead-in-stabbing-at-house-party-in-northwest-calgary,
http://www.cnn.com/2014/04/15/world/calgary-university-students-fatally-stabbed,
http://news.nationalpost.com/2014/04/16/how-could-one-person-with-a-knife-kill-five-people-at-a-party,
http://news.nationalpost.com/2014/04/17/calgary-stabbing-suspect-acted-strangely-in-days-leading-up-to-massacre
http://www.infowars.com/elliot-roger-santa-barbara-killer-parallels-and-numbers
