Comment on the speaker's opinion about socialism and point out a possible inconsistency in their argument.
"I'll let you in on a secret. I believe, vehemently, that socialism is a mental illness that affects the feeble minded among us. The people who espouse it are ignorant and/or unable to process knowledge and arrive at conclusions."
I see -- so when you said we should treat our fellow citizens with respect, you were basically just talking out of one side of your mouth. (Or will you now claim that calling people mentally ill isn't disrespectful?)
On a related note, it must really gall you to not have to pay for your healthcare.