Three misdemeanor charges were filed Monday against the son of former Avalanche forward and now Philadelphia Flyers interim general manager Danny Briere after a video posted on social media showed him and another Mercyhurst University athlete pushing an unoccupied wheelchair down a staircase. Police in Erie, Pennsylvania, filed charges of criminal mischief, criminal conspiracy to commit mischief and disorderly conduct against Carson Briere, who completed his third hockey season at Mercyhurst.