While the mass protests of 15 February 2003 didn’t dissuade Blair and Bush from invading Iraq, this documentary throws positive light on those dark days by showing how the Stop the War coalition sparked a wave of global dissent that reminds us that the masses are themselves “a superpower”. Key figures from the original marches share teary (and tear-inducing) memories of the moment when the people said no, while a trail of guilty lies is followed from the dodgy dossier to the Chilcot inquiry with still enraging results.