Liberalism has always had a home in science fiction. In one Star trek episode I found that it was illegal to eat real meat. In another episode they were investigating a murder on earth and determined that the killer must be a star fleet officer because they were the only ones with access to weapons.
I grew up reading science fiction full of liberal ideals but I still became a conservative.
Well, it varies depending on the sci-fi. The politics of Star Trek is, indeed, utopian socialism. I hear that the cancelled TV series "Firefly" was actually pretty libertarian.
However, the "politics" of Star Wars is little more than childish fairy-tale nonsense. Queens and Princesses, family squabbles and quests, councils and Knights. It's lifted from Lancelot & Guinevere, not Marx & Lenin.