High fine for student organization over hyperlinks - so students get used to societal censorship early on. Besides, it's really annoying when these students indulge in the luxury of having a political opinion. And so one learns very early that you only have to accept elected representatives and their actions when it suits you.
But silencing the victims of educational institutions has a tradition - school expulsions for expressing one's own political opinion I still remember from my school days (not from my school - we were fortunate to have a principal with a brain who actually used it).
The fact that in this case the lawsuit also comes from a fellow student who doesn't like the political opinions expressed by the AStA - and that the reaction is a lawsuit instead of a discussion - fits the picture perfectly. After all, the formation of one's own political opinion and engagement with general political topics only distracts from being bred into a specialized idiot in the education factory...