On this day, 3 December 1944, British-trained and -equipped Greek police, alongside Nazi collaborators, fired on an anti-Nazi demonstration in Athens, killing 28 people, while US and British troops watched. Previously British forces had attempted to disperse the crowd and shot tracer fire overheads of demonstrators, to no avail. The rationale behind the move was to weaken the anti-Nazi partisans, who had been allied with Britain for the previous three years, as Prime Minister Winston Churchill felt they had been too influenced by communists.
https://tribunemag.co.uk/2020/05/how-churchill-crushed-greeces-anti-fascist-resistance
