I don't know what set the killer off. I have never heard a fellow Canadian espouse violence against fellow Canadians (except at sports events). I personally would never tolerate anyone urging gratuitous violence against anybody. I believe most Muslims that live in Canada share my views. The killer may havbeen exposed to hate but there is no proof whatsoever that they came from any organized ultra-right-wing source. While it is true that hatred exists, it is also true that it is vrtually impossible to expunge that pathology from all of society (although Canadians give it their best) given the very few who are affected. Yes - hatred is nothing new and impacts people sporadically. One has, however, to examine the frequency it occurs in Canada relative to a world in which hatred is actually institutionalized by radical groups and governments. Decent Canadians, including decent Muslims, simply do not deserve to be tarred with that brush and resent efforts by self-serving critics to do so.