Wow, a tribe's self-promotion turns out to not be accurate - I'm gobsmacked.
You can read the New Testament, you can read the Vedas, you can go in for Book of Miracles - everything's hunky-dory until you try living it. And that's when we're people again. Even in the ashrams there's fighting and sexual abuse going on, same as in the Catholic and Protestant churches. We're humans, we fuck up constantly, including killing each other a lot (supposedly the Old Testament even says explicitly "Thou Shalt Not Kill", but there are more exceptions to the rule than you can shake a bump stock-fitted AR-17 at).

Att the moment i'm amazed we've got war down to such a small part of human endeavour at the moment - perhaps because few people realize it - we have some terrorism, a few spats, but mostly we're out trying to make money and travel to places to put on Instagram, and our hate isn't nearly as visceral as it used to be, maybe because we tweet it out every day so there's usually no real emotion to pick up real weapons and do something crueler. (schools seem to be a local exception to this, but I figure that's half immaturity/showoff with easy targets and copycat vibe).

Anyway, no, historical Cambodia, Thailand, Burma haven't been that peaceful despite the Buddhist influence.