I'd like to point out that the Federal Office for the Protection of the Constitution declared them a "proven right-extremist endeavor" back in May – until the AfD got a preliminary injunction against that. Until that is resolved they're not officially considered dangerous.

Of course the injunction hasn't been resolved yet and the AfD will probably try to stretch it out until the next general election.

Due to highly effective social media work (probably with some help from abroad) and the traditional media continually being goaded into talking about their preferred topics (and not, for instance, their laughably terrible fiscal policy), they currently stand to be the most powerful party after the next election. And you can guess how much that "proven right-extremist" declaration would mean if they get to form a government.

If I remember correctly it was highly criticized and were force to dispose of them