SECTION 1. Section 14 of chapter 6E of the General Laws is hereby amended by striking out paragraph (e) and inserting in place thereof the following paragraph:-

(e) When a police department has advance knowledge of a planned mass demonstration, it shall attempt in good faith to communicate with organizers of the event to discuss logistical plans, strategies to avoid conflict and potential communication needs between police and event participants. The department shall make plans to avoid and de-escalate potential conflicts and designate an officer in charge of de-escalation planning and communication about the plans within the department. A law enforcement officer shall not discharge or order the discharge of tear gas or any other chemical weapon. A law enforcement officer shall not discharge or order the discharge of rubber pellets from a propulsion device or release or order the release of a dog to control or influence a person’s behavior unless: (i) de-escalation tactics have been attempted and failed or are not feasible based on the totality of the circumstances; and (ii) the measures used are necessary to prevent imminent harm and the foreseeable harm inflicted by the rubber pellets or dog is proportionate to the threat of imminent harm. If a law enforcement officer utilizes or orders the use rubber pellets or a dog against a crowd, the law enforcement officer’s appointing agency shall file a report with the commission detailing all measures that were taken in advance of the event to reduce the probability of disorder and all de-escalation tactics and other measures that were taken at the time of the event to de-escalate tensions and avoid the necessity of using the rubber pellets or dog. The commission shall review the report and may make any additional investigation. After such review and investigation, the commission shall, if applicable, make a finding as to whether the pre-event and contemporaneous de-escalation tactics were adequate and whether the use of or order to use such rubber pellets or dog was justified.