That is not the criteria of banning a party. There is the Verfassung or constitution. If you work towards the abolition of the constitution, then you will get punished.
And that AfD is against the best interest of the people, i guess, you can not be serious. It is a populist party that picks up all the things that people are not happy about and are popular, but ignored. It is actually in the very interest of the people who vote for them. But of course scary for the people, who get voted out. Majority wins.
Who is to judge? From my perspective i see everyone else walking in a wrong direction. And from theirs probably me plus everyone else. The outcome will only be known in the future. The system adapts. For some it works, for others it doesnt. That's democracy. Got to live with what is maybe not in my interest, when other people vote for their own and are a majority. That's why people leave countries and hopefully find other places.
And that AfD is against the best interest of the people, i guess, you can not be serious. It is a populist party that picks up all the things that people are not happy about and are popular, but ignored. It is actually in the very interest of the people who vote for them. But of course scary for the people, who get voted out. Majority wins.