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
You can’t see it on the first kit really in that picture, but that’s a map of Palestine on the sleeve. They also use the shape of the map as '1’s for the numbers on their shirts