He is referring to the attack on Canadian parliament(0) by a lone gunman on 2014-10-22 [0]http://www.cbc.ca/news/politics/shooting-on-parliament-hill-what-cbc-

He is referring to the attack on Canadian parliament(0) by a lone gunman on 2014-10-22 [0]http://www.cbc.ca/news/politics/shooting-on-parliament-hill-what-cbc-s-raw-camera-footage-shows-1.2818392 http://www.cbc.ca/news/politics/shooting-on-parliament-hill-...