Also, check out various religious and ethnic communities in Canada that decry "intermarriage". That is ostensibly religious based, though often conceals an ethnic or racial bias. Children don't follow their parents' "rules" as much as they used to, but that's because society is moving forward. These "rules" still exist, in my own Jewish community.
Yes, they still exist within the spectrum of religious law or community values but are not enforced by government. My rabbi would certainly not perform a marriage between a Jew and non-Jew. That's his right. It's not the right of a government marriage commissioner. Nor would I, as Jew, marry someone who wasn't a Jew. That's not bigoted. It's not because I hate Christians or Hindus or Muslims or anyone else. Nor would a member of that community who refused to marry me be a bigot motivated by hatred. It's based on our beliefs as to what a marriage is.