The guy who shot the most iconic image of N.W.A. says the same company keeps ripping off his classic work with the rap legends ... so now he's trying to take 'em down in court.
In the docs, Howard Rosenberg says at least 3 of his shots popped up on MTV.com and BET.com -- which are both owned by Viacom. It's deja vu for Rosenberg ... who points out he also sued Viacom in 2011 for the same thing, and eventually settled.
Rosenberg says his N.W.A. pics are so valuable because they were shot in 1989 -- right before Ice Cube left the group. So he says they're rare shots of the whole lineup -- Cube, Dr. Dre, Eazy-E, DJ Yella, and MC Ren.
Howard says he already fired off a warning letter to Viacom, which deleted the images from its websites ... but they still haven't paid him a dime.
He's now asking a judge to make the media giant cough up his cash and stop using his pics once and for all.