I don't believe any of his statements imply moral equivalence. I can believe (using your example of WW2) that on the whole, Imperial Japan was a more evil syste

I don't believe any of his statements imply moral equivalence. I can believe (using your example of WW2) that on the whole, Imperial Japan was a more evil system (rape of Nanking? unprovoked attacks?) but still see Hiroshima and Nagasaki and the murder of Japanese prisoners of war as evil acts of their own. That's not the kind of slippery slope you are describing, it's just how history works I really think bringing in the rhetorical attacks and the references to Shapiro and modern politics (nobody wass taking about that guy) is disingenuous and takes the discussion out of the historical and into today's politics, which isn't useful and distracting.