I recently had occasion to listen to Robert Lyons speak and was most taken by his Intimate Enemy photo essay on the Rwandan genocide. They're stark, striking portraits, and I liked his approach of not immediately identifying killer from survivor (certainly proved me wrong- repeatedly), further expanding the "banality of evil" viewpoint (although, in this case, it is also not without its own inherent, unintended consequence).*
But it does cause one to stop, think and ponder on the insanity that betook this nation, an insanity that throughout the latter century (and well into this one) has well proven to lurk within each and everyone of us regardless of race, creed, color or sex.
*...this line-up and mug-shot exercise may also serve to reaffirm the racist stereotype that any Black person could be a threat.