Each new episode of violence against westerners committed in the name of Islam-the beheading of Western journalists in Syria, the killing of a Canadian soldier, the deaths of Australian hostages in Sydney and, most recently (at the time of writing) the murders at Charlie Hebdo followed by more hostage deaths in Paris-leads to renewed calls for 'ordinary' Muslims to denounce the perpetrators and, particularly for those who live in Europe, North America and Australia, to…
