[SaltyLemonZest]

In one of the controversies discussed in the article, Facebook banned an ad on the grounds that an upside-down red triangle constitutes hate speech - it's "a triangle symbol used by Nazis to identify political prisoners", you see. So I'm not sure the concept is quite as well-defined as you're suggesting.

[brendoelfrendo]

Except that is defined, that's a thing that's real, and the upside down red triangle specifically was used to identify political prisoners of the Nazi party, like liberals, socialists, and unionized laborers.[1]

I guess I'm not sure of your point, because to me, the use of the symbol, in a political context, and especially in the context of a polemic populist political campaign, is problematic, regardless of whether or not the Trump campaign or whoever backed that advertisement knew what it was.

[1] https://en.wikipedia.org/wiki/Nazi_concentration_camp_badge

[SaltyLemonZest]

The question isn't whether it's problematic in some generic sense, but whether it's hate speech or a call to violence. I'm extraordinarily skeptical that anyone sees a red triangle and thinks "ah, I understand, the triangle is telling me I should go engage in political violence".