deniggerize

verb2

1. •
   (offensive) To raise (a black person, etc.) above the traditional negative racist stereotypes.

   • A broad spectrum of African-Americans have used education to deniggerize themselves […] — 1996
2. •
   (offensive) To free from black people or their influence.

   • In some areas black schools were integrated only after insulting efforts to 'deniggerize' the school were carried out (replacement of all toilet seats, fumigation of the school, etc. — 2010