I'm a little confused. Are Nazis good because their free speech is being threatened? Or are they bad because they're socialists?

Some of them are probably decent people who harbor hate for some in their heart. That hate doesn't mean they are all bad. Just think of the hate we see on the left. They're not all bad either. It's not difficult to comprehend unless your agenda is to pretend one side's hate is acceptable and the other side's hate is not. But most decent people recognize that for the fraud it is because hate is hate.