I actually think the CBC guy has some validity still. Certainly civility falls apart quickly in large groups like Reddit or Twitter where most interactions are

I actually think the CBC guy has some validity still. Certainly civility falls apart quickly in large groups like Reddit or Twitter where most interactions are one-offs, but in small ones (irc channels and forums), even where there are major political disagreements I've seen surprisingly good handling. Even the worst of those horrible terrible trolls/harassers/cyberbullies/<other bullshit here> often has somewhere they're more accepted and accepting.