Actually no, there's this thing called the First Amendment and a bunch of rulings saying just because speech is unpopular is not a sufficient reason to publicly

Actually no, there's this thing called the First Amendment and a bunch of rulings saying just because speech is unpopular is not a sufficient reason to publicly defund or censor it. So there is no "majority consensus" option here. Minority views have rights, too. This is purely in terms of what can be declared "harmful" or "obscene" or "inappropriate" and again, these have to be weighed against the artistic merit and value of the work as a whole (so a single sex scene in a memoir doesn't count.) And yeah it is book banning and has a chilling effect - my duaghter brought a book from home and had it stolen - as we later learned, it was by a teacher who was worried they (the teachers) would get in trouble for it being at the school at all, regardless of how it got there.