Libertarian Socialist Flag.
https://en.wikipedia.org/wiki/Libertarian_socialism

The image is of a flag representing libertarian socialism. The flag has an overall dimensional ratio of width: two, and length: three. The flag is parted gyronny of ten, gules (red) and sable (black). The red gyrons (web color #FF0000, PMS 2347 C) symbolize socialism (workers’ control of production) and democratic governance within workplaces and communities, while the black gyrons (web color #000000, PMS Black 6 C) symbolize anarchy (the rejection of illegitimate authority) and liberty. The central charge is a counterchanged star (mullet), the radius of which from center to point is one-fourth of the flag’s overall length. The star may symbolize humanity and also evokes the Greco-Roman letter ‘A’ for ‘Anarchy’ (‘Anarchia’, ‹Ἀναρχία›). The above image was created using Inkscape and is in the public domain. The RGB hexadecimal colors are definitive; the PMS colors are suggestions. (See construction sheet.)
Own work
Philip Kanellopoulos (User:Pipcallas = User:Pkanella = User:Pckan), https://www.peristanom.org/