I'm torn. I'm ML but I'm all about that leftist unity and I love my anarchist comrades. So in that sense, I do really prefer the red/black flag.
But then again, damn that all-red flag just looks so damn good. It's simplicity really gets the point across. And the all-red flag does have some links to the anarchist movement in the 19th century, IIRC. Not to mention fucking ancaps have co-opted the black for their lame ass yellow/black flag. It sucks but I despise them so much.
I dunno, what do you all think?
This is all black erasure.
Also, the ones with AKs on them are good.
Also also, red and black gives you more options to color coordinate.
I like the red/black flag. The red part says "unite, join us" and the black part says "don't mess with us, we are not afraid to defend ourselves". I think that gets the message across.
this is all green flag erasure, you best start asking gadaffi for forgiveness
There's a bunch of dope songs in different languages about the red flag:
The Red Flag (English) - Original Version, Alternate Version by Billy Bragg
Bandiera Rossa (Italian) - Original Version
Le Drapeau Rouge (French) - Original Version
Probably more that I don't know off the top of my headSo personally that would tilt things in favour of the plain red flag for me.