Show them the pics and ask them are these nazi better than the ones that gassed their relatives long ago. Whatever the answer just say so not all nazis are bad? Then make them explain to you their actual position on the subject. After the nonsensical answer or lack there of ask so why should I care if commies fight nazis.

Mostly I just ask questions that confuse their thought process in a very rude and sarcastic way, Mostly for shits and giggles.