I note that what ALWAYS happens when this discussion comes up, is a retort along the lines of 'Oh yeah, well Christianity, blah, blah, blah'.....as if making the argument about Christianity wins the point.....i'm not a Christian, i'm as secular as the day is long......and I see the problem as religious fundamentalism.......and the MOST powerful fundamentalist sect of any religion on the planet isn't Christianity, which is rather mild, even in it's most fundamentalist 'Fred Phelps' mode (Yelling idiotic statements outside funerals is nothing like killing thousands of people).
As a secularist, I view the fundamentalist aspect of Islam, which most estimate at 10% of the Islamic world, as one of the greatest threats to western civilization in existence......I certainly see it as a threat to Europe over the next 40 or 50 years.......
Yes, we have a tendency to shield religions from criticism.......but a religion is nothing but an ideology with a supernature reinforcer......so why can we not rationally discuss the ideological implications of certain beliefs just as we do political ideologies.........if anything religious ideologies, because of the supernatural reinforcer, can be VASTLY MORE DANGEROUS that political ideologies.......the majority of the Islamic world are peaceful, but a minority has a VERY DANGEROUS ideology that needs to be addressed.