There _already_ is and has ben censorship of books in schools for decades upon decades....adult sex novels are not included in the average school library and for good reason, and thats exactly what this is about as well, as you point out.
I'd like a bit more differentiated discussion on this - does LGBTQ actually mean sexual topics or does it include a book where having same-sex parents is shown as normal? From skimming the article that wasn't quite clear to me.
The latter. There's an entirely different category for sexual content. If you look at the bar chart, you'll see that these bans are predominantly targeting books that have LGBTQ characters. And books that have non-white characters.
I think the debate is not whether same-sex parents are depicted, but when they openly manifest their sexuality towards each other (like kissing) - some parents object to this.
No, this is just parents who are afraid of their personal worldview being challenged by their own kids (oh the insolence!).
Nobody came to these parents to tell them "your kid should not be reading X". If parents don't trust/like the curriculum of their local school, AFAIK homeschooling is still an option in the US.
Ah yes, the slipper slope. Let's be honest, librarians and educators have a ton of power and no oversight in indoctrinating children into the views that they want. Now that parents are challenging them, all of sudden, PEN America believes that parents should have no say on the material their kids read.
It's not a slippery slope. That is literally what you are advocating. The same parents who don't want their children to know what Ruby Bridges went through or that gay people exist also don't want their children to learn about evolution.