Naw, courts have already determined the constitutionality of libraries being able to remove items based upon local community boards of education and boards of libraries who are open to influence by community groups. You may not like those who petition removal or libraries that remove, but none of it is illegal or undemocratic.
Regardless of your downvotes the fact remains that not including certain books and/or removing them based upon community petition is more democratic than keeping them in the library against the wishes of the community. A minority’s complaints doesn’t always overrule the majority’s when both sides are fully capable of petitioning for their position and having it implemented.
As a reader of literature I don’t like the current basis of the effort to remove books, but I accept it as part of our democratic system; it’s better than a dictate that you must keep certain books in the library.