First, its a Q+A. She will answer a question and that's it. (if she even answers). There is no second question. There is no debate that many of the proposed questions would try to lead to. Best you could do is a mike drop question. "As a gay man, i really felt alienated in this world, that has started to get better in recent years, but then there was a reinterpretation of the law governing my rifle, and now i feel alienated all over again and worse as its now a legal grey area. How do you intend to protect the few like me?" (the gay part was put in to try relate to discrimination, Of course any co-workers that know you are married to a female my have a WTF look. lol )
Second, anything that sounds negative or offensive (like you are attacking her or her tactics) will likely not help your employment situation, and likely not be answered. (so cross out that mike drop question above)
Third, she is smart. As much as i loath her, she is smart, conniving and likely has an rebuttal for anything you can say, and she gets the last word. Plus everyone there is looking up to her and thinks she is a leader. Its a no win situation.
Finally, i think the best advice may be take the day off. I do like the idea of playing the snowflake position and ask whats next (like confiscation) but not sure you will get an answer there. She wont let the cat out of the bag.
Me: I think i would get a "Make America great again" hat, sit in the front row and just stare at her the entire time with a creepy smile. Passive aggressive style. But i DGAF about my employer. I am replaceable, but so are they.