People kill people. Not guns, not religion, but people. Religious people kill, as do atheists (just look at the USSR). Since religion exists almost everywhere in the world, it makes absolutely no sense to use the argument of "where there is religion there is death", especially considering that atheistic regimes have been even more violent than religious ones. By your logic, you could also argue that pants kill people. After all, everywhere where you see pants, you also see death.

What is dangerous is radicalism, and which symbol the radicals stick on their banner makes no difference at all, be they crosses, stars, hammers and sickles or swastikas.