On this Martin Luther King day, it’s worth remembering another campaigner for human rights also butchered for his bravery.

On January17th, 1945, sixty years ago today, Raoul Wallenberg, the Swedish diplomat who saved tens of thousands of Jews in wartime Budapest, was arrested by the Soviets, and, like so many other millions, disappeared into the darkness of Stalin’s system. He almost certainly perished in prison there during the late 1940s.

The site of his grave remains unknown. His courage does not.