Historically speaking, religious people are usually victims of other religions. Either because a new religion threatens the power base of the established religion and so gets mercilessly clamped down on, or some other problems threatens the security of a majority religion and they use a minority religion as a scapegoat. Places like the USSR and their violent anti-religious campaign are rarer, and was in all honesty just another kind of ideological purity power grab.
People who have nothing to really gain or lose in or out of a religion are much less likely to be assholes about the whole business.