Today we remember the evil of 9/11, as first reports of a small plane crash morphed into two and finally became a terror attack with hijacked passenger planes. We recall the horrific scenes of people jumping from the towers. But we should also remember the heroism: the fire fighters climbing stairs to their doom, the passengers on Flight 93 fighting back. We should recall that unity that Americans felt afterward in shared grief and outrage. But we should also remember how in that unity we made historic mistakes and turned to torture and waterboarding, and to an invasion of Iraq that cost $3 trillion and countless lives while benefiting Iran. That is the full legacy of 9/11: So much evil, so much heroism, so many mistakes. Thoughts?