Law and immigration enforcement have been widely misusing crowd control weapons — such as chemical irritants, projectiles and stun grenades — at protests against immigration enforcement operations around the nation, according to a new report from the Berkeley Human Rights Center in collaboration with Physicians for Human Rights. Using open-source data, such as social media, from 16 U.S. cities between June 2025 and May 2026, researchers identified and verified 412 incidents of misuse and 203 resulting injuries. Ninety percent of the data was concentrated in five U.S cities — Chicago, Los Angeles, Minneapolis, Newark and Portland — which all faced federal immigration enforcement operations and had resulting protest movements. “I definitely think it’s important that people (pay) attention to this report,” said Alexa Koenig, the director of the Investigations Lab at the Berkeley Human Rights Center. “So that as local government is making determinations around their own relationship to...