When did disagreeing become a personal attack?

Somewhere along the way, “I see it differently” started being heard as “I hate you and your dog.”

I've disagreed with friends about taxes, zoning, and whether a hot dog is a sandwich. We're still friends. (It isn't. Fight me — politely.)

Healthy communities need people who can argue in the afternoon and share a beer in the evening. The alternative is a town full of people who only talk to their own reflection.