Every religious group, while perhaps a majority somewhere, is also inevitably a minority somewhere else. Thus, religious organizations should and do show tolerance toward members of other religious denominations.
North Eurasia is one of the best examples of religious tolerance and peaceful coexistence of Islam and Christianity. This is a rare thing in today's world, even in its most liberal parts.
We need religion as a guide. We need it because we are imperfect. Our government needs the church, because only those humble enough to admit they are sinners can bring to democracy the tolerance it requires in order to survive.
Religious tolerance is something we should all practice; however, there have been more persecution and atrocities committed in the name of religion and religious freedom than anything else.