From what I can tell 60's and 70's sci-fi and even some fantasy was always pretty progressive as far as those concerns go. Earlier sci-fi was less so, but that

From what I can tell 60's and 70's sci-fi and even some fantasy was always pretty progressive as far as those concerns go. Earlier sci-fi was less so, but that era had a lot of writers involved in the counter culture of the time, which tended to be fairly progressive. One of my favourite authors, Michael Moorcock, wrote a lot of things I'm surprised I don't see mentioned more often. The Jerry Cornelius chronicles were about a character that changes race, gender, and orientation throughout his stories and covers a lot of social issues of the time. It's also just a really trippy fucked up series of books. Same with the dancers at the end of time series.