Race traitor

Race traitor is a pejorative reference to a person who is perceived as supporting attitudes or positions thought to be against the supposed interests or well-being of that person's own race. For example, one or both parties to an interracial relationship may be characterized as "race traitors". The term is the source of the name of a quarterly magazine, "Race Traitor", founded in 1993.
During apartheid in South Africa, in which the white minority held exclusive political power, white anti-apartheid activists were characterised as "traitors" by the government.
Thomas Mair, who murdered British MP Jo Cox in 2016, regarded Cox as a "traitor" to the white race. Mair had also published letters criticising "white liberals and traitors" in South Africa who he described as "the greatest enemy of the old apartheid system". After being charged with Cox's murder, he gave his name, during a court hearing, as "Death to traitors, freedom for Britain".