Another bug, probably due to a high increase in the numbers. After I implemented basic income, things remained ok. It was only after I chose these task options that the popularity numbers started going down and extremists going up for no reason:

Fearing criminal prosecution, lobbyists and politicians now only meet on remote islands during "vacations."
Politicians who lie to get elected go to jail for perjury.
Mercur fights the explosion of population with an offer for sterilization at no cost for ages thirty and older.
Prominent right-wing extremists deny involvement, but are arrested and sentenced when a mysterious letter claiming responsibility for burning down the parliament building is 'found' during house raids in the middle of the night.

People can look at the stats here. There's absolutely no reason for these numbers of extremists. Basic income covered the living cost. There is no reason why private consumption decreased from over 150 billion to 58 billion. Hell imports are above domestic consumption. While capital shows to be increasing; this makes absolutely no sense.