@theleftistlawyer I heard a long time ago, don’t know if true (probably not), that Roddenberry originally wanted to make a non-scifi about social injustices and such but was rejected – so he put it in space instead.

Whether true or not, that’s how I view TOS. I mean there’s literally an episode about half-black-half-white being racist to half-white-half-black people of their own species… many if not most episodes are extremely thinly veiled social commentary.