'' S-21 : The Khmer Rouge Killing Machine '' premiered at the 2003 Cannes Film Festival , where it won the Prix François Chalais . It was also screened at several other film festivals , including the 2003 Toronto International Film Festival ( its North American premiere ) , the New York Film Festival and the Vancouver International Film Festival . It won for best documentary at the Chicago International Film Festival , the European Film Awards and the Valladolid International Film Festival ; humanitarian award at the Hong Kong International Film Festival , the FIPRESCI Prize at the Dok Leipzig , a special jury prize at the Copenhagen International Film Festival , and runner-up at the Yamagata International Documentary Film Festival
Vancouver International Film Festival
Vancouver International Film Festival
S-21: The Khmer Rouge Killing Machine