An Anti-Racist
(As applied to white people), an anti-racist is a person who makes a conscious choice to act to challenge some aspect of the white supremacy system: including her/his own white privilege, as well as some form of oppression against people of color.
(As applied to people of color), some use the term anti-racist. Others use synonyms such as freedom fighter, activist, warrior, liberation fighter, political prisoner, prisoner of war, sister, brother, etc. In practice, it is difficult for an activist of color not to be an anti-racist activist, since the struggle against racial oppression intersects with every issue affecting people of color.