Well it is quite simple, people have different cultures, bare that in mind, and keeping an appropriate level of respect for everyone is what matters.
If you visit another country, you are expected to respect their cultures and traditions, vice versa.
Main issue with refugees as far as I can see even though I am pro-refugee, is integration, some of them need to push more to integrate within the community instead of setting up their own little foreign "communities" , because that helps no one.