Funny that this time this started from the right side of the political spectrum.
Good to remember that pretty much all leftist governments had to pivot toward authoritarianism 'for the greater good'.
AfD is objectively far more popular in the former east Germany. Look at a map of votes, it’s clear as day. The borders are exact. They are not a left wing party, not at all. They are a far right party.
It makes sense that the the economically struggling former communist areas would be both more drawn to extreme parties and have a distaste for the left.
That: "have a distaste for the left" is extremely wrong, because before the AfD, the far-left parties which traced their history back to the SED (the socialist party of the GDR (East Germany)) were very popular there, much more so than in West Germany.