Nazi concentration camp badge
Facebook removed the campaign ads that used the red triangle symbol, saying that its use in this context violated their policy against "organized hate". The Trump campaign's communications director wrote that "The red triangle is a common Antifa symbol used in an ad about Antifa." However, the historian Mark Bray, who wrote Antifa: The Anti-Fascist Handbook, disagreed. He said that the symbol Antifa in the United States does not use this symbol.