The culture is made initially long time ago maybe million years ago, some of these culture are good and some are bad.
Culture for me is a general word which can be said to different things such as generousity and hospitality.
Islam came and told us what is good and what is bad and therfore we were asked to protect the good culture.
What will protect you is your belief and faith either you are christian or Muslim.
The culture is every one responsibility, and I am sure 100 % the western have some good cultures which they must protect.
I hope we all have a common respect points in which it Respects Islam and Christianity.