[thepasswordis]

The basic chain of events is:

Teachers wanted to have books like this: https://www.youtube.com/watch?v=_Cd5VUhMrF4 available in classrooms (this is on the MO 'banned books' list). Parents (obviously) objected to this, but the teachers/librarians dug their heels in.

Due to a loss of trust, parents started demanding oversight into everything that the schools/libraries were making available, and that's how you end up with absolutely crazy things like banning photos of the statue of David.

[saalweachter]

TLDW: Erika Moen (web cartoonist) wrote a book called "Let's Talk About It: The Teen's Guide to Sex, Relationships and Being Human"; in the chapter on sexting she advises teens that pictures they send to people can never be deleted and therefore they should crop out their faces and any identifying birthmarks, etc, before sending one. A concerned parent read this passage at a school board meeting to protest this books inclusion in the library. Hilarity ensues.

[positron6000]

but this is about public libraries, not school libraries. also, the linked video is from Alaska, not Missouri.