Russia's Supreme Court has ordered the closure of International Memorial, Russia's oldest human rights group.
Memorial worked to recover the memory of the millions of innocent people executed, imprisoned or persecuted in the Soviet era.
Formally it has been "liquidated" for failing to mark a number of social media posts with its official status as a "foreign agent".
That designation was given in 2016 for receiving funding from abroad.
But in court, the prosecutor labelled Memorial a "public threat", accusing the group of being in the pay of the West to focus attention on Soviet crimes instead of highlighting a "glorious past".