https://en.wikipedia.org/wiki/Russell_Tribunal
The Russell Tribunal, also known as the International War Crimes Tribunal, Russell-Sartre Tribunal, or Stockholm Tribunal, was a private People's Tribunal organised in 1966 by Bertrand Russell, British philosopher and Nobel Prize winner, and hosted by French philosopher and writer Jean-Paul Sartre, along with Lelio Basso, Ken Coates, Ralph Schoenman, Julio Cortázar and several others. The tribunal investigated and evaluated American foreign policy and military intervention in Vietnam. This had taken place in the decade following the 1954 defeat of French forces at Diên Biên Phu and the establishment of North and South Vietnam.
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Additional tribunals have been conducted in the following decades on the same model, using the denomination Russell Tribunal. E.g., The Russell Tribunal on Latin America focused on human rights violations in the military dictatorships of Argentina and Brazil (Rome, 1973), on Chile's military coup d'état (Rome, 1974–76), on Human Rights in Psychiatry (Berlin, 2001), on Iraq (Brussels, 2004), and on Palestine (Barcelona, 2009–12). The tribunal has been subject to criticism by some historians and activists who argue against its lack of standing.