They don't have to stock everything. But it's not about stocking regardless of content - it's about refusing to stock specific content. They're not removing the least interesting N% - it's very targeted.

Of course it's targeted--do you think elementary school libraries should be stocking books with, say, violent sexual content? That is my point: everyone agrees a line must be drawn somewhere, the argument is just where to draw the line. Everyone is in favor of "banning books" from school libraries, they just differ on which books should be banned.

Why must the line be drawn anywhere in relation to the sexual orientation of the characters? I mean, violence, sure. But we know this is not the targeting that's happening. And neither is sexual violence banned - you can easily find the bible in schools.

Sure, but where they draw the line is to exclude a lot of widely lauded literary cornerstones. People aren't complaining about banning porn, they're complaining about banning literature.