Seriously, I'm torn as to which side I should take in this matter. Leftists accusing "unoriginal" leftist of artistic plagiarism, of artwork that was ostensively created "for the people" to use.
Incidentally, I'd imagine that the authors of this "Art for a Change" (sigh, there's that word again) article would be somewhat less than pleased with the People's Cube—though, as far as I can tell, the Cube's work is clearly a parody of the "iconic" leftist art that all of this hand-wringing is over, and to me, that's a whole lot more poignant than Fairey's work.
But hey, I'm an evil conservative. What'd you expect me to say?
(h/t Friedman Advocates of the aptly-named "What Is Fair Use?" blog)