In the 90s censorship was targeting music and video games, similarly from both the right and the left. Book bans - same thing. I worked in a bookstore in the 90s and we had to deal with calls to ban books from all sorts of groups, our history has been a constant struggle to push back against government overreach in order to protect free expression. The internet is simply the latest battleground and with new techniques to ban content without directly banning it, by going after payment processors and removing anonymity - we're not banning content, you just have to report all your purchases of it to the government, which of course effectively bans it.