Support WBUROpinionThe Gates Case: A Legal Look At Opening Your TrapEmma Coleman JordanJuly 24, 2009 ShareCambridge police Sgt. James Crowley (left) stands with Sgt. Leon Lashley (right) as police from various unions hold a news conference in Cambridge, Mass., on July 24. Crowley was the officer who arrested Harvard professor Henry Louis Gates. (AP)