You're on treacherous ground there my friend.  White people certainly have a culture in Canada, no matter what the academics say.  White people tend to act and behave in a certain way, and we also tend to build social structures within our own group.  In many places we even have a different accent.

There is a reason why comedians can crack jokes about the things that white people do, and why a blog called "Stuff White People Like" was very popular a few years ago.  We have a culture.  It is not better or worse than other cultures, and the lines may not always be distinct, but we definitely have a culture.