The concept is called a "photo release" and it's standard in print media before they will publish a photo of someone who is clearly identifiable (public figures/celebrities excepted).

I don't know if they are legally required though. If they are, what you want is a court case that finds that Facebook needs a photo release from each person before allowing that person to be "tagged" in a posted photo.

I don't use Facebook, but would be unsurprised to find that somewhere in their terms of use you grant a blanket photo release to them.