We can all do our bit. Don’t read, promulgate, or write pieces that promote unmitigated hate. Avoid the obscene rants and the lunatic fringe. Have a working assumption that just because someone disagrees with you doesn’t mean they’re immoral or insane. And take the time to listen -- as honestly and respectfully as you want to be listened to in turn -- to all the other voices that make up our unruly, difficult democracy.
To which I say "amen!". Also, he includes a very poignant portion of Obama's Tuscan speech.