Take a look at the Canadian cases of Maclean's magazine and columnist Mark Steyn, and the Sun Media chain and both Geert Wilders and Ann Coulter. All three warn of the imminent Muslim threat to civilization – that’s good old us, of course – and demonize an entire religion and its adherents by effectively lumping together all the world’s 1.5 billion Muslims as one homogeneous, monolithic, looming, existential menace. Never mind that Muslims live in every country on earth and are divided by sect, nationality, class, language, religious practice, ideology and race.
There are several things we must grasp if we're ever going to understand what motivated Anders Breivik's murderous rampage in Norway. As is well known now, Mr. Breivik was a devotee of those many strident voices on the web who accuse the Norwegian Labour Party and its ilk of treason for being too soft on Muslims. For him, the logical response was to slaughter the children of the "traitors" in huge numbers.