Outsider music, like outsider art is separated from its mainstream counterparts by its obscurity, incorrectness, and often the outcast status of the artists who produce it.
en.wikipedia.org A letter of protest signed about 1500 artists, professionals, and other concerned citizens argued for civic freedoms and art as one sphere of freedom, incorrectness, difference.
en.wikipedia.org The political incorrectness will feel wildly liberating for a while, then it will just feel bad.
www.nzherald.co.nz The x mark is also sometimes used for this purpose (most notably on election ballot papers), but otherwise usually indicates no, incorrectness, or failure.
en.wikipedia.org They appreciate brash personalities who play well on television, and they don't mind a little political incorrectness.
www.cnn.com