Censorship by Labels

Whenever a conservative talks of Islam, Obama, Healthcare, education, our faith, protecting life, immigration, size of government, etc, etc, etc, we hear, “sexist, intolerant, xenophobic, homophobic, Islamophobic, racist, bigoted” (SIXHIRB). This is meant to shut down discussion. Who controls this narrative? (See documentary for more examples: http://www.mrctv.org/videos/indoctrinate-u)