Most Americans, and Westerners in general, are very much aware of this violent historyI can't speak for other "westerners", but most Americans are not aware of the lengthy long history of Islamist violence ...
They can name which Kardashian is sleeping with who, what current freak sideshow is in the news, which rapper beat up their hoe...
They can't even answer this question, you think they know about Islam ?
Who is this person ?
My point was made in the second half of my post:
but for some very strange reason they believe it of Christian Europe. How has this happened?
I don't know why but the attribute Islam's violence with Christianity and Christianity's virtues with Islam. It's very nearly diabolical.