The lesson from debate class, or one of the lessons, is never to compare your opponent to the Nazis. (If they aren't actually Nazis.) For once you've done that, you've indicated that you really don't have an argument; you're out of ammo, and have resorted to playground name-calling. The guy at the neighboring podium who is taking the other side of the issue on, say, vaping, isn't in the same category of the fascists who ran Germany from 1933-1945.