First, I certainly appreciate the empathy you've shown for victims & families.
Now, comparing Muslims to Europeans (I'm guessing you were referring to white, non Muslim Europeans) is like comparing apples & mustard greens. None of those Europeans, that I know of, are in a religion that wants all other religions dead. Many (notice, I didn't say all) Muslim Clerics are teaching "death to infidels" in Mosques across America (infidels being you, your family, & me & mine unless your Muslim). The Muslims that want us dead, are not a relatively few, unlike the KKK, or Black Panthers, and they're instructed to commit mass murders. Unfortunately, the religion of Islam has been "Hijacked" by these radicals. And just as unfortunate, we can't tell the good Muslims from the bad. I don't have all the answers, but IMO, we should stop bring Muslims into our country, at least until our Govt. gets a handle on the ones here already. According to an article in the Wash. Times, there are over 5 Million people in the US who have overstayed their Visas. Things are out of control.