LEXINGTON, Mass. (AP) — Thousands of people came to Lexington, Massachusetts, just before dawn on Saturday to witness a reenactment of how the American Revolution began 250 years ago, with the blast of gunshot and a trail of colonial spin. Starting with Saturday’s anniversary of the Battles of Lexington and Concord, the country will look back to its war of independence and ask where its legacy stands today. Just after dawn on the Lexington Battle Green, militiamen, muskets in hand, took on a