Damn I'm pissed about this. I think I'm going to talk to a reporter at the O about this... and talk with a lawyer. I'm actually worried about my safety here, and think I will yell as loud as I can for my own safety.
I don't blame you. That email you got really worries me as well. Especially coming from a supposed advocate. And the threat is thinly veiled.
I would VERY strongly urge you to immediately contact IAB and file a formal complaint against the officers present at the stop, and Lt. Wilson for his ensuing email. Two separate complaints. It's plain that they are escalating the situation "officially".
If I didn't have reservations already for this coming weekend I'd be there for sure! The weekend of the 22nd I'll be free, and maybe we can do a follow up gathering on that day?