To McGrath:

Nazi Germany was an extreme expression of the desire to hold nationalistic views, as opposed to humanistic views. The extermination of Muslims in Croatia under the puppet Nazi rule led to a lack of Muslims to exterminate when the recent ethnic cleansing of Croatia took place, just as the rather older massacres of Jews in York have led to a low Jewish population in York. Were I not a humanist, I could see a case for massacring all McGraths in Harlow.

The analogy is that comparable violent events have occurred in the past, when questions of ideology have been advanced. In the main, such events have been hundreds of years ago. Where this is not the case they have been SO OFFENSIVE TO THE REST OF THE WORLD AS TO PROVOKE WAR. Nazi Germany no longer exists. Your argument died with it.