sentences:  Rob Horning developed a critique of hipsterism in his April 2009 article "The Death of the Hipster" in "PopMatters", exploring several possible definitions for the hipster.He muses that the hipster might be the "embodiment of postmodernism as a spent force, revealing what happens when pastiche and irony exhaust themselves as aesthetics", or might be "a kind of permanent cultural middleman in hypermediated late capitalism, selling out alternative sources of social power developed by outsider groups, just as the original 'white negros' evinced by Norman Mailer did to the original, pre-pejorative 'hipsters'—blacks".Horning also proposed that the role of hipsters may be to "appropriat[e] the new cultural capital forms, delivering them to mainstream media in a commercial form and stripping their inventors ... of the power and the glory".