Iranian Supreme Leader Ayatollah Ali Khamenei’s niece, a rights activist, has called on foreign governments to cut all ties with Tehran over its violent crackdown on popular unrest kindled by the death of a young woman in police custody.

A video of a statement by Farideh Moradkhani, an engineer whose late father was a prominent Opposition figure married to Khamenei’s sister, was being widely shared online after what activist news agency HRANA said was her arrest on November 23.

“O free people, be with us and tell your governments to stop supporting this murderous and child-killing regime,” Moradkhani said in the video.

“This regime is not loyal to any of its religious principles and does not know any rules except force and maintaining power.” “Now is the time for all free and democratic countries to recall their representatives from Iran as a symbolic gesture and to expel the representatives of this brutal regime from their countries,” she added.

HRANA said 450 protesters had been killed in more than two months of unrest as of November 26, including 63 minors. It said 60 members of the security forces had been killed, and 18,173 protesters detained. The protests pose one of the strongest challenges to the country’s clerical establishment since the 1979 Islamic Revolution.