You are late to the party. It was stated from the beginning the officer was beaten in the face and his eye was swollen shut along with facial swelling.
Huh. I can't claim to have been following the situation closely--there are so many cops beating, Tasering, and killing unarmed Mundanes these days--but about a week in was the first I ever heard of an injury to the cop, and it sounded as though it was breaking news.