https://techcrunch.com/2020/06/18/facebook-trump-campaign-nazi-imagery-red-triangle/

Facebook removed a cluster of incendiary Trump campaign ads Thursday for violating its rules against hate group imagery. The campaign’s ads attacked antifa, the decentralized anti-fascist movement and a frequent target of the president’s ire, with imagery of an upside-down red triangle — a well-documented symbol worn by Nazi political prisoners held in concentration camps.

The ads, still viewable on Facebook’s Ad Library, were associated with Trump’s own Facebook page, Vice President Mike Pence’s page and Team Trump, a dedicated campaign account.