A police officer was struck by a thrown object on K Street and taken to a hospital, said Doug Buchanan, a D.C. Fire and EMS spokesman.

The officer is the fourth hospitalized Friday while dealing with a group of destructive anti-capitalist protesters on the streets around 13th and K NW. Another officer was hit with an object, one fell off his bicycle, and one was hit with pepper spray deployed by another officer.

Police have three times formed a line and used flash-bang grenades and pepper spray to push protesters away from the area. Ninety-five people have been arrested and charged with rioting. But Interim Police Chief Peter Newsham has said that “in the grand scheme of things, this is a small disturbance in a small part of the city. Literally, we have thousands of others who are peacefully demonstrating.”