Belated response – prefacing, I don’t doubt that a bunch of German politicians will end up finding out they were on the wrong side of history here, that’s not my point though.

• Zizek incident: He was placed into an uncomfortable and unfair situation. However, afaict, there were no legal troubles, he was only told his speech was not welcome. (Of course, “legal troubles” was my interpretation of your original message only – it’s fair if you don’t agree). Also, as far as I gather, he was not criticized for mentioning humanity of Gazans either, rather for suggesting they should have a say in how their country is divided up. Yes, that’s messed up too.
• Varoufakis incident: Varoufakis argues for the one-state solution. Afaict, Germany basically made arguing for that illegal, unless the one state you want is Israel. Again, messed up, but the humanness of Gazans is not concerned here either. (And of course, we somehow can’t prevent a notorious racist who wants to send foreign-looking people into certain death like Martin Sellner from entering Germany; yet the law works against Varoufakis who tries to argue for peace.)