So history doesn't matter? Tell that to those nations trying to rebuild a society, or tell that to those people who suffered and still suffer the prejudice and bias built into the psyche of people and into their behaviors. Tell that to those others who suffered holocausts or mass murder. History matters for it establishes the present and should not ever be forgotten since many people are ready to return to bias prejudice hatred and evil which stands in the background ready. All that is required is a reason and for some they are too convenient.
"We first kill people with our minds, before we kill them with weapons. Whatever the conflict, the enemy is always the destroyer. We're on God's side; they're barbaric. We're good, they're evil. War gives us a feeling of moral clarity that we lack at other times." Sam Keen
"...[M]any people find themselves surprised at the sympathy they can feel for even outrageous opponents of government-as was demonstrated when popular support blossomed for the anti-government forces holed up with David Koresh at Waco, Texas, or with Randy Weaver, who defied the FBI at Ruby Ridge, Idaho. I remember filmmaker Oliver Stone's telling me how much he sided with those underdogs. After all, much of what those groups said was just the equivalent of the Jefferson tee shirt worn by Timothy McVeigh, the bomber of Oklahoma City's federal building. But the real victims of our fear are not those faced with such extreme action - not even the 168 people killed (and many more injured) by McVeigh. The real victims are the millions of poor or shelterless or medically indigent who have been told, over the years, that they must lack care or life support in the name of their very own freedom. Better for them to starve than to be enslaved by "big government." That is the real cost of our anti-government values." Garry Wills 'A Necessary Evil' Introduction p21