“...just ask continuing questions about ridiculous, illogical circular reasoning...”
Been there, done that many times.
When the few leftists who actually listen what is being said and finally arrives at the point to understand that his argument is illogical, nonsensical, built on fallacy, maybe even contradict the laws of nature, ...he will double down and insist he is still right / superior.
...“...just ask continuing questions about ridiculous, illogical circular reasoning...”
Been there, done that many times...
It’s actually very entertaining.
Actually, that's when you get called a racist, xenophobe, nazi, etcetera, depending upon the circumstance and nature of the discussion. They're going to shut it down and if they can't shut it down they'll shout it down. Nature of the beast, spent many mostly futile years in leftist haunts, drinking and debating/arguing.
Won a few over, and surprisingly the old hippies are the most amenable. The left or what it's become actually scares them, it's what they thought they'd fought against in the sixties and seventies. They sort of default into a vague left-libertarian position, still vote largely Democrat, but there's nothing about the modern Democrat Party that could be described as live and let live or go along to get along. It's all about confrontation and force. Pointing that out gently without partisan rancor is the single most effective thing I could do at the time. They've become what they though they hated.