Cambridge police used pepper spray twice in August, with different responses to inquiries about the incidents.
In one case, residents were forced from their homes after police tossed in balls containing the chemical to dislodge a suspect.
Police commissioner Christine Elow said police wouldn’t use the chemical again in a similar situation.
In another incident, a Harvard Square demonstration against Israel’s war in Gaza, police arrested three people and used pepper spray to stop protesters from assaulting officers.
Author's summary: Cambridge police face questions over protest handling.