We're still very far behind in this regard, but it has dramatically improved in a single generation. My parents used to be considered mixed here - my father is an English Protestant, mother an Irish Catholic. She was beaten up by fellow Catholics for dating him in the early 1970s in Newfoundland and Labrador, Canada.
Blows my mind.
It lingered a bit. When I was bullied in elementary school, they called me a halfbreed. So it was still around JUST enough then that they knew that word. But it quickly changed to f** by junior high.
And today it's gone. Whatever is left, people don't even know the reason - it's just friendly geographic rivalry, not deeply rooted religious hatred. Now that I'm old enough to understand what it was, I cannot believe how completely and quickly it ended. Bravo to my parents' generation.
1.2% of couples in St. John's are in mixed relationships. That seems small, but it's about 50% of our non-white population.
So, you know... it's doing well here, proportionately.