Whats the most violent religion?

No religion as such teaches violence. It is we, particularly few among us, the practioners, who are violent at times.

I could be wrong about it, but ... all are

The answer is one of those no-brainers that makes instant sense when you think of it. It's just this: Religion causes people to engage in "magical thinking." Which means, non-rational, hopeful-without-basis, careless, willing to ignore facts, reliance on authoritarian pronouncements rather than the conclusions of their own independent mind, all sorts of things like that