I really don't think any religion is peaceful. In fact, by definition, these are designed to be violent. After all, by committing to a religion, you are committing to its teachings with no evidence whatsoever that these reflect some sort of objective truth, which is why you call these "beliefs". Once you do that, you are bound to defend these unproven "truths" against threats, which can take the form of a person who minds his own business and chooses to eat meat, or a perfectly nice guy who happens to be gay. Because you've committed to the tenets pretty much blindly, to avoid cognitive dissonance, you are almost bound to act against such threats to your beliefs.