April 30, 2021 6:16 pm DC Crime Lab Under Scrutiny Hundreds of criminal cases and the integrity of evidence involving the D.C. crime lab hang in the balance. News4’s Pat Lawson Muse reports. Local 2:22 GW protesters celebrate after arrestees are released from DC police custody 3:50 Crews clear George Washington U. protest encampment after police arrest 33 people 8:06 DC mayor, police chief speak about 33 George Washington U. protest arrests 6:51 DC police use pepper spray, make arrests at George Washington U. 3:36 DC police clearing out George Washington U. protest encampment