rockism
n.— «The word is rockism, and among the small but extraordinarily pesky group of people who obsess over this stuff, rockism is a word meant to start fights. The rockism debate began in earnest in the early 1980’s, but over the past few years it has heated up, and today, in certain impassioned circles, there is simply nothing worse than a rockist.» —“The Rap Against Rockism” by Kelefa Sanneh New York Times Oct. 31, 2004. (source: Double-Tongued Dictionary)