As the Trump administration’s immigration dragnet intensified in June, a nurse in Portland, Oregon, left work one midafternoon and drove to a nearby detention facility to voice his opposition. Federal agents had set off smoke grenades, driving away many protesters at the front of the facility, but Vincent Hawkins lifted his megaphone anyway.

“You should stop and think about what you’re doing!”

The shot came seconds later, a silver projectile launched through the small facility’s closed gate, hitting him in the face. The tear gas canister shattered his glasses, ripped apart his brow, crushed against his eye and concussed him. In video footage, the projectile can be seen bouncing off his face and arcing back toward the unknown Immigration and Customs Enforcement agent who fired it.

Hawkins, a 25-year veteran of the emergency room, was rushed to one, bleeding and wondering if he’d ever see through his left eye again. A frequent demonstrator, he knew the risks. He’d seen friends struggling to breathe through toxic chemical clouds, others pelted with pepper balls. But Hawkins was undeterred.

“I have things to say,” he said. “And if it means being wounded to do it, then here I am.”

The 55-year-old said he’d be blind in one eye if not for the shielding effect of his glasses. He’s regained most of his vision but suffers from dizziness and vertigo, sometimes causing him to miss work.