The video, taken by an onlooker to Monday night's fatal encounter between police and George Floyd, 46, showed him lying face down and handcuffed, groaning for help and repeatedly saying, "please, I can't breathe," before growing motionless. The second day of demonstrations, accompanied by looting and vandalism, began hours after Mayor Jacob Frey urged prosecutors to file criminal charges against the white policeman shown pinning Floyd to the street. Floyd, who was unarmed and reportedly suspected of trying to pass counterfeit bills at a corner eatery, was taken by ambulance from the scene of his arrest and pronounced dead the same night at a hospital.