Jonah Goldberg presents an intriguing thought experiment in Two Cheers for “McCarthyism”?:
If, in some sort of parallel-universe exercise, the same number of (now proven) Soviet-Communist spies, collaborators, sympathizers, and the like were somehow switched to Nazis, and McCarthy went after them with the same vehemence as he went after Reds, Joe McCarthy might well have universities and foundations named after him today. Just imagine if a ring of Nazi party members were found to be working in Hollywood, never mind the State Department, taking money from Berlin to advance the Nazi cause. Does anyone really think “McCarthyism” would still be denounced as an unmitigated evil, often put at the front of the parade of horribles alongside Hitlerism and Stalinism?