The former director of a social justice center at the University of California, Berkeley School of Law has sued her ex-boss, claiming that she was unjustly fired amid an undercurrent of racial tension at the center and the law school.

Wilda White, who is black, had served as the executive director of the law school’s Thelton E. Henderson Center for Social Justice from 2008 until April, when she was told that her $123,000 contract would not be renewed because of her poor working relationship with her supervisor Mary Louis Frampton, who is white.