Why don’t we view socialists and the hammer and sickle with the same revulsion as we view Nazis and the swastika? As a Modern History teacher for the past two years, I have had the opportunity with my classes to cover a broad spread of the worst atrocities ever committed in the 20th century – the Nazi Party’s rise to power, the Cold War, Communist China. However, in our professional groups on social media, there are a vocal minority of fellow history teachers who, in spite of the clear lessons that history teaches us, feel it appropriate to share openly...