Ann Coulter says "Liberals don't rely on words. They judge us on a jurisprudence of epithets." [1] Jared Taylo [2]r explains why people call dissidents names. See his announcement of the 2013 American Renaissance conference [3]for details of the story about the Simon's Rock student he mentions.
Links:
[1] https://www.google.com/search?q= "Liberals don't rely on words. They judge us on a jurisprudence of epithets."&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a
[2] http://www.vdare.com/users/jared-taylor
[3] http://www.vdare.com/articles/american-renaisance-s-2013-conference