Original Post (reposted with permission)

u/mourning_starre on their flag:

See it wave.

This flag incorporates the Three Arrows, a common antifascist symbol originally used by the Iron Front, an anti-Nazi paramilitary organisation in interwar Germany.

The specific colour choice was taken from this poster of the Social Democratic Party of Austria ahead of the 1945 election.

The three arrows have been variously interpreted, including as the"political, economic, and physical strength of the working class". Among antifascist symbols, this is my favourite because it turns the same logic of simple and effective symbolism used by the Nazis in the form of their swastika and turns it back on them. Why the arrows point left and down isn’t clear but is the most common form.

I would propose this flag to be used instead of or alongside the common Antifaschistische Aktion flag, which is a little ugly.