Don't assume authority. Don't get riled up. Be Socratic, and help them get there themselves. Also... be Jon Stewart.
These videos of Jon Stewart's interview by Rachel Maddow are absolutely must-sees. He has mastered the art of debate through conversation. You don't even see what he's doing. And yet, he wins every argument.
It's fascinating. And it can be learned. Thank you Jon Stewart for the reminder. Because too often, when I run into irrational people who won't follow logic, I give up diplomacy far too quickly and jump straight to condescension, which fails even more quickly. But, watching you has renewed my desire to win without fighting. Sun Tzu-style.
And yes, I would vote for you if you ran for President.
Watch the video clips.