SAN FRANCISCO - Facebook on Thursday said it removed ads run by President Donald Trump’s re-election campaign featuring an upside down red triangle similar to one used by Nazis to mark political prisoners for violating its policy on organized hate.The ads called on supporters "to sign a petition and "stand with your President and his decision to declare ANTIFA a Terrorist Organization.“ They were placed on Facebook pages for Trump, Vice President Mike Pence and the official “Team Trump” page.“Dangerous MOBS of far-left groups are running through our streets and causing absolute mayhem,” the ad reads. “They are DESTROYING our cities and rioting - it’s absolute madness.”Similar to the triangle featured in the ads, an inverted red triangle was.