Flags flew at half staff on Monday as workers on Capitol Hill and around the nation observed a moment of silence to mark Saturday’s tragedy in Tucson. At the White House, President Obama expressed grief for the families of five persons who were killed. At a Tucson hospital, the critically-wounded Rep. Gabrielle Giffords reportedly gave a thumbs up to doctors treating her gunshot wound to the head. In an Arizona courtroom, a suspect was accused of attempting to assassinate the congresswoman. “This senseless and cowardly shooting occurred as the congresswoman and her constituents were engaged in the kind of event that makes our democracy work and represents America at its best. Anti-government sentiment carried to a violent and deadly extreme is a sad reflection of America at its worst. America is better than this," Sen. Bernie Sanders said of the Saturday shooting spree.