SAN FRANCISCO -- The Golden Gate Bridge is open again to pedestrians and bikers after a hours-long closure earlier today. Highway Patrol and San Francisco police officers closed the bridge after a small group of peace protesters tried to march across the span. CodePink, an anti-war group, planned to walk across the bridge around noon today. The group, with members gathered at both ends of the bridge, was stopped by officers. After about three hours, officials arrested CodePink leader Medea Benjamin and a handful of other protesters for trespassing.