I came across a funny quote, from the National Review, that rang true:
"In Washington, they are practically praying for a Christian terrorist."
In the old lists of logical fallacies, there was one called "Tu Quoque," aka the "you too" fallacy. In other words, "Your religion has terrorists too! Get off your high horse!" Recent examples are better, of course. The I.R.A. was so last century, and perhaps more nationalist than primarily Roman Catholic.
It's hard to find examples with equivalent ferocity
To the ISIS bastards with their taste for grim atrocity.