How harshly and swift, not just in theory? And please come up with a good amount of examples. The statistics say otherwise. And yes I know - in my opinion wrongly done - cases like David Bendels. But they are not the norm at all.

There is a special paragraph, that does exist since the 50s that gives politicians some extra protection and was updated after the murder of Walter Lübcke after a ton of hatespeech on the internet against him.

But beside that, you are also free to go to court if someone insults you. Not just politicians.