If you have a core culture value of free association then they can exist in the same area. Take Syria before 2013, Christians, Muslims and Jews co-existed relatively peacefully vs other countries in the region such as Pakistan. In Pakistan police won't investigate crimes against Christians.

The core culture values have to be based on respect for your fundamental rights. I might hate you, I won't infringe on your rights. Religions, food, clothing styles are all superficial aspects of culture. I was going to cover most of your question in the next post taking about risk, reward and respect after I write it.