Comment by phendrenad2

It's more complicated than that, in this case. They aren't simply insulting AfD by calling it a Nazi party. There is some truth to it, in that AfD almost certainly has Nazis in it. A prominent AfD member has used the phrase "all for Germany" that was also used by the Nazis. They also openly say that they want to take down holocaust memorials and stop talking about it.

Personally, I think that the full accusation of Nazism should be reserved for when it's really needed. But I assume that Germans know better than I do how to go about keeping Nazis out of their country.