Nazis used red triangles to mark political prisoners. That symbol is why Facebook banned a Donald Trump reelection campaign ad. - 2020-06-19
A red triangle was once a common sight at Nazi concentration camps, a part of history now thrust into the national spotlight by a banned political campaign ad.
Facebook moved Thursday to remove ads from President Donald Trump's reelection campaign that the company said violated its policies on "organized hate" and were a "banned hate group's symbol," an upside-down red triangle.
The symbol is not listed in the Anti-Defamation League's database of symbols of hate and resembles an emoji that can be easily used. At particular issue currently: It may also be tied to antifa, an umbrella term for leftist militants.