Reddit reviews Anarchy 3x5 ft Polyester Flag

Here is the flag image that has/is being flown in our community. Yes I know this link goes to Amazon.

Here is a Wikipedia article on many of the Anarchist symbols and flags.

Here is a personal favorite, a comedic take on explaining a few of the different Anarchist flags.

And you're right, the "base" flag can be seen as the solid black flag, which is more so an anti-flag and a sign of dissent than it is an actual "flag." The color(s) you choose to add to that black flag are up to the individual, and simply express what strand of philosophical thought you focus your Anarchism through.

For instance, I am constructing a blue and black flag to express my anarcho-transhumanism.

If I misinterpreted your question or didn't give enough examples, let me know and I'll correct my mistakes.