Because there are no modern Nazis, so they're a perfect straw man / boogeyman. But most Western countries still have actual, real communist parties so you can'

Because there are no modern Nazis, so they're a perfect straw man / boogeyman. But most Western countries still have actual, real communist parties so you can't paint completely crazy pictures of them, because their members will simply raise their hand and say "no we're not like that at all".