A law enforcement officer present and observing another officer using or attempting to use physical force, including deadly force, beyond that which is necessary or objectively reasonable based on the totality of the circumstances, shall intervene to prevent the observed officer's use of unnecessary or unreasonable force, regardless of the rank of the officer so observed, unless intervening would result in imminent harm to the officer or another identifiable individual.
The failure of a law enforcement officer to intervene as set forth in 550 CMR 6.06 may subject the officer to de-certification by the Commission.
550 CMR, § 6.06