Logocide

Logocide is an attempt to kill a word or to pervert a meaning in order to destroy it. The result is something deadly to reason and communication, designed to limit what it was possible to think about or discuss. The best known example can be found in Newspeak as told by George Orwell’s Nineteen Eighty-Four.

One of the most notable examples of logocide by the Left is their perversion of the word "gay" (originally meaning happy) by redefining it to refer to homosexuals.