Summary: In a slow-starting 2012 Republican presidential field that lacks star power, Michele Bachmann is carving out a role as the polarizing Tea Party favorite with a dynamic, take-no-prisoners style. … One-year retrospective: One year ago today, on April 12, 2010, Aubrey Immelman reported that U.S. troops opened fire on a bus carrying Afghan civilians, killing five people and setting off anti-American protests in Kandahar, where coalition forces hope to rally the public for a coming offensive against the Taliban.