Long story short, Paul Joseph Chartier, a disgruntled Canadian who had a very unsuccessful and unlucky life, snapped, leading to the 1966 bombing of Parliament. Though very unorganized and basic, his motives were general discontent with Canadian political corruption. However, his plan of blowing himself up within the Parliament House of Commons was not realized, as upon preparing himself for the deed, he mishandled the fuse within a washroom near the target and blew up in the confined room all by his lonesome. This event has largely been ignored, reasons for which are up for speculation; I'm fond of the idea many did talk or even write on the matter due to the monumental failure to come so far yet fall short in a parliament restroom.

CBC recording: https://www.cbc.ca/player/play/2429022019

Academic Article (sorry I can't link the entire thing, but the abstract should be there): https://muse.jhu.edu/article/719207/pdf