I thought my MIL was a freak of nature, but after reading this thread I'm horrified that there are others out there!
She screamed bloody murder when my dh told his father over the phone that we were going to get married (I wasn't on the phone - and she wasn't on the phone, yet it sounded like she was in the room with me). She hasn't changed her mind about me, and that was 30 years ago.
She and my fil (in fact, my dh's entire family) told us we were not welcome in their home and they wanted nothing to do with us anymore when we adopted our daughter (she was the wrong color). We didn't see them for two years. They never said they were sorry, just decided to include us again. My fil has passed away, but my mil still makes veiled (barely) racist comments when we are around. None of my children have any respect or affection for her.
We moved 500 miles away and only have to deal with her for 3 days at a time, twice a year. That's all any of us can handle.