Saying that religion causes peace is a strange statement. In fact there is a direct correlation between the most Atheistic countries in the world and a lower rate of violent crimes.
Religion is a tricky subject. Religion in moderation causes no harm to anyone. You never hear about religious moderates flying planes into buildings or stoning people to death lol.
This is a bullshit statistic but I think it would be fair to say that 90% of so called religious people are pretty moderate in their beliefs. I.e I know a few people who consider themselves Christians, yet they believe in evolut