pictures of old guys- often overweight- with a gun and making comments like "This fat old fool thinks he could fight the Army!" and such. You can ask(assuming they haven't already blocked you for questioning the Preferred Narrative, or asking uncomfortable questions) things like "Know who he is? Know his background? For all you know he COULD make one hell of a stand." Instead, I think- when possible- I'll just respond with a picture of Mr. Whittemores' tombstone.
I was aware of his history, but I'd not seen the stone until yesterday. I think it makes the point nicely.