Tensions escalated between demonstrators and Minneapolis police Wednesday night, when both officers and protesters deployed a chemical irritant amid clashes. Protests at a makeshift encampment near a police precinct continued into the night after police named two officers involved in the death of Jamar Clark, an unarmed black man shot Sunday. Mark Ringgenberg and Dustin Schwarze were identified as the officers involved in the shooting. Police said they used a chemical irritant to control the crowd, but protesters allegedly responded by deploying a chemical spray at officers, said police spokesman John Elder. Several officers sustained minor injuries after rocks and water bottles were thrown. Clark was shot in the head during a reported confrontation with police officers, but some witnesses allege he wasn’t struggling and was handcuffed during the incident.