Tom [disapproving] - a black person who is considered to be too eager to help or agree with white people or too willing to accept being treated in a way that is not equal to white peopleThose who have taken courses in Afro-American studies have surely come across the work of Henry Louis Gates and know that he is no Uncle Tom.
UNCLE
Meaning of UNCLE in English
Cambridge English vocab. Кембриджский английский словарь. 2012