Bahar Mustafa banned whites from BME-only university events. She organized women-of-color-only anti-racism event excluding white men. Mustafa tweeted ''KillAllWhiteMen'' and called a student ''white trash''. She defended hashtag as feminist frustration not literal androcide. Mustafa claimed ethnic minority women cannot be racist or sexist due to lacking privilege. Police charged her with threatening messages but dropped case after resignation. Students petitioned to sack her for hate speech but failed. Union president resigned alleging bullying by Mustafa. Mustafa compared her events to black caucuses in unions. Critics called events racial segregation at British university. Mustafa received support from some as free speech but faced death threats. She resigned citing mental health amid investigations. Police investigation chilled free speech per advocates. Mustafa later backed another activist in race row. Her actions sparked national media fury over double standards. White cis males felt silenced on campus due to her.