>> i felt bad for corn neilus. >> reporter: cornelius fredericks had been a ward of the state for severalears. his mother died years before, and his father lost custody of his son when he went to prison. fredericks leaves behind four siblings. >> this institutional violence goes on far too often, and the children are powerless and voiceless. and no one's out on the street protesting cornelius fredericks' brutal and ruthless killing. >> reporter: lakeside academy has since been shut down and its license revoked. its residents were moved to another location. now in a statement to cbs news, sequel youth and family services tells us that they operated at sequel, they said they emphasized deescalation both with our staff and our students. it is our policy, they say, to only use restraints as an emergency safety intervention. we are committed to making the necessary changes to ensure something like this never happens again. vlad? >> this is such a horrible story. and to know from your reporting that cornelius fredericks had been a ward of the state, his mom died, his father lost custody, and no