Memes

I don’t see many central European states killing people for the reason of having different ideologies these days.

Of course not, they are nestled comfortably within the imperial core, they can better-afford to export their killing (see Germany's devotion to Israel). Most imperial core states are not like America, where protest leaders get lynched and then it gets called a suicide, because they rely on vassal states to be attack dogs.

As their position in the core becomes less and less firm, you will find that their liberalism decays into something much harsher. This has already begun with growing fascist movements in Germany, France, Italy, and so on.

Without any kind of repressive system you’ll have anarchy.

Agreed, though this is not necessarily a bad thing, depending on the particular structure of the society. However, in the meantime, it is also the socialist position that the state is repressive and, in the circumstances we currently find ourselves in, repression is necessary, it's just a matter of who is doing the repressing and who is being repressed.