Russia’s Supreme Court on Tuesday ruled that one of the country’s oldest and most prominent human rights organizations should be shut down, a move that stirred up much public outrage and is the latest step in a months-long crackdown on rights activists, independent media and opposition supporters.

The Prosecutor General’s Office last month petitioned the Supreme Court to revoke the legal status of Memorial — an international human rights group that rose to prominence for its studies of political repression in the Soviet Union and currently encompasses more than 50 smaller groups in Russia and abroad.

The court on Tuesday