If you think terrorism is a hallmark of Islam, then you must think needless slaughter is a hallmark of Christianity. Estimates of 100,ooo civilians killed in Iraq, and many more in Syria, Afghanistan etc.
Of course, if you don't think Muslim lives matter, as the Lefties would say, then perhaps it alright. So, when you total the under 4000 killed by terrorists and compare it to the half million killed by the US and its coalition, I'd say we are still the more deadly. Take pride in being American.