"because moderators don't need to speak a language to tackle issues like nudity"
Nor are they required to know history, as when they banned Phan Thi Kim Phuc photo by Nick Ut.
That's what happen when you hire cheap "Mechanical Turks" (© Amazon) to perform this kind of work.
After all, " Ignorance is Strength", and if look at Zuck and FB, there's something true in it.
Also, FB will remove hateful contents, as soon as you notify it about each of them, one by one....