Derogatory racist term used by white supremacists to describe any group from Africa, the Middle East, or Asia, or of ancestry from any of those places, and sometimes even used to describe people of European ancestry who are considered to be white by normal people. Use of this term generally indicates severe mental illness in the person using it.
To groups like the KKK, Chinese, blacks, Moroccans and South Asians all fall under the inexplicable category of "mud races"
by Rattus cattus October 24, 2006