NIN front man Trent Reznor is angry at Apple for rejecting the new Nine Inch Nails iPhone app update because it contains “objectionable content.” The objectionable content referenced is the song ‘The Downward Spiral,’ which you can buy on iTunes. Reznor posted the rejection letter on NIN’s forums, and then launched into a rant about censorship — comparing Apple to Walmart. (NSFW language inside)