i know of livorno, celtic, rayo vallecano, union st gilloise, standard liege, red star paris, bologna (maybe?) and the better version of st pauli babelsberg 03
liverpool, man utd and basically everyother major football club have some socialist history due to it being a working class sport, but it seems that is just history now. the big clubs are all moneygrubbing bastards
can’t believe no one’s mentioned omonia or omonia 29m in cyprus. they’re the greek livorno, most supporters are voters or members of AKEL. their logo is based off old eastern bloc heraldry. they’ve managed to reach the cypriot first division in recent years. no idea why they split from omonia fc to form their own fan owned club, im not a cypriot. will probably start following their activity, seems like a very interesting story