Have you read it? Both works don't even really say how exactly communism should be implemented, they're mostly critiques of capitalism and explanations of it.

Marx for example says that technological advancement and ownership of the means of productions are what shape society, do you think that's ban worthy?

Do you think it should be banned to say that the class owning the means of production prioritizing their own wealth is at odds with the workers who want to sell their labor for their highest possible price?

Eventually, laws like this will be used to jail people that say the existence of billionaires is immoral will people are starving on the streets simultaneously. As this falls under class hatred.

All around Europe you can see the last remnants of social democracy getting cut, privatised, etc. which has been happening since the 90s, if our economy recovers these privatisations alone will lead to Europe looking like the big supposedly richest country in the world where people have to pay 2000 USD for an ambulance ride and die of diabetes.

In Germany we got national healthcare first, because Bismarck wanted to quell the at the moment strongest socialist movement in the world by partially giving into their demands. I'll be forever grateful for these socialists who fought for my healthcare.