That's rough. Some of the discussions here also got heated and a couple people on both sides of the debate did sink to leveling personal attacks and questioning others' motivations, patriotism, intelligence, sincerity, empathy, etc rather than understanding their point of view. It's amazing how damaging it can be to have even a small number of people who have decided to abandon good-faith discussion.

I'm not sure how you prevent folks like that from getting a foothold, but seems like it's worth figuring out.