the transnational class of european factory workers didn't spend all day talking to each other for their whole lives. you could also easily reframe your post to

the transnational class of european factory workers didn't spend all day talking to each other for their whole lives. you could also easily reframe your post to be about liberals or nationalists instead of communists and come to the opposite conclusion. "the idea that a bavarian and a westphalian..." etc. all groupings beyond the clan are synthetic and political.