Facebook claimed that breastfeeding photos violated its terms of
service if they showed "an entire breast." Eventually it dropped the
vagueness and the euphemism and claimed that all photos with a visible
nipple or areola were "obscene," "pornographic," or "sexually
explicit." This claim by Facebook is at odds with legislation, case
law, and actual practice throughout the USA. In addition,
breastfeeding itself is allowed in public, exposed breasts or not, in
almost all states in the country. By its attitude and action, Facebook
is wrong. It demeans and stigmatizes women and breastfeeding.
You can read more at the URL above.