"My point is that Islam is the world's greatest source of violent evil and the greatest threat to human civilization in this age. "
The greatest threat of violence is ALWAYS going to be Satan's perversion of holy works. In this case, human's with an agenda are the source. The faith itself has been around for eons in Persia with little a whimper towards terrorism... until the revolution came.
All things in moderation. Even faith. ANY faith.