Warning: This post contains images of nipples (although they are covered by other nipples) and may be inappropriate for work environments.
As you likely well know, nipples are not welcome on Instagram and Facebook. Sorry -- I mean women's nipples. For some odd reason misogyny, mainstream culture has labeled women's breasts, or at least the tips of them, as graphic, inappropriate and too sexual. Even Olympia's. And Venus of Urbino's.