Just get up and walk out. Be a man (or a woman if you are one. ) but stop putting up with nonsense like this.
No, no, no. Stay and fight. You have to attend, you do not have to agree with anything. Create chaos. Make the Ahole defend every definition. Use phones to connect with friends who have talking points to dispute.
Drive this Ahole off the stage. Make it personal. E.g., ask him if he misses being there on Oct7 so he could also rape and kill.