The gist: It turns out that after being used by the Nazis to mark Communist and other political prisoners, the inverted red triangle has indeed been claimed by the left, even anti-fascist groups, in Europe and Canada and among Twitter users, though not as Antifa’s main symbol by any means.

By TATIANA PROPHET

THE INTERNET — Around noon on Wednesday, conservatives began tweeting about Facebook deleting ads sponsored by the Trump campaign, under their “organized hate” prohibition.