BY TOM H. HASTINGS As someone who studies and tries to practice nonviolence, it is frankly tiresome to hear the endless refrains of triumphalism when honoring the American Revolution as a violent chapter in human history. John Adams was there. His conclusion, as a participant and eyewitness, was that the period of at least a decade leading up to the start of rifle-fire was the real revolution. “An History of Military operations from April 19, 17…