I don't see a reason for a culture clash, myself. Culture is something you carry with you, and isn't something a person can really rob you of. The way I see things, culture is a gift that we all possess and are able to share with one another.
One of the most beautiful things I have ever seen was a few years ago, right around Christmas---a posada procession, a Christmas tradition from Mexico; but I was seeing it here in the United States. This was not a publicly sponsored event, just some families who got together and kept a Christmas tradition alive. It was beautiful to see them in the neighborhood, dressed in finery, all the children going from door to door, reenacting the search of Mary and Joseph for a room for the night. Adults accompanied the procession, leading the singing and playing guitars. I found it all very moving.
Did I feel somehow threatened that this was taking place outside of Mexico, in a neighborhood in Southern California? No, I felt privileged. I feel sorry for anyone who cannot share in such a thing, cannot see beauty when it marches right in front of your eyes.....
........like a simple posada procession on a clear December night in balmy Southern California.