The mass gassings of Europe’s took place in Auschwitz between 1942 and the end of 1944, when the Nazis retreated before the advancing Red Army. Jews were transported to Auschwitz from all over Nazi-occupied or Nazi-dominated Europe and most were slaughtered in Auschwitz upon arrival, sometimes as many as 12,000 in one day. Some victims were selected for slave labour or “medical” experimentation before they were murdered or allowed to die.
Today, a new menace presents itself. Islamism possesses the violent will of the Nazis but doesn't have the means to implement it's atrocities. It must be thoroughly destroyed before it does.