A 29-year-old CUNY professor has been arrested for allegedly assaulting two officers at last night's Million March NYC.

Brooklyn resident Eric Linsker has been hit with seven charges—including robbery, assault on a police officer, rioting, resisting arrest, reckless endangerment, obstructing government administration, and unlawful possession of marijuana—for the incident on the Brooklyn Bridge around 7:30 p.m. last night.

Cops say that two NYPD Legal Affairs Bureau lieutenants were on the pedestrian walkway on the Brooklyn Bridge monitoring the protest when they observed Linsker attempting to throw a garbage can onto the roadway below where other officers and demonstrators were walking.

As they attempted to take him into custody, Linsker allegedly "violently resisted," which led to an ensuing struggle in which he "punched and kicked the lieutenants while attempting to remove their NYPD jackets and radios." According to the NYPD, other demonstrators intervened during the scuffle to prevent Linsker's arrest, which allowed him to flee the scene.

"I did speak to the two lieutenants in the hospital, and they said that there were other people on the bridge who attempted to help them," O'Neill told reporters.

Linsker allegedly left behind a backpack, which cops say had a ski mask, three hammers wrapped in plastic, and other "personal items." They were able to track Linsker down because of the backpack, though it wasn't clear exactly how.

via @nypdnews: items found at site of BK Bridge incident were 2 police officials were assaulted. #MillionsMarchNYC pic.twitter.com/smawjCIOW2 — Azi (@Azi) December 14, 2014

The officers were taken to a lower Manhattan hospital; one suffered a broken nose. Both men were treated and released.

At a press conference late last night, Chief of Department James O'Neill told reporters about the incident, while NYPD Intelligence Commissioner John Miller described Linsker's bag as a sort of anarchist's "kit."

"After tonight's event, after the cops being assaulted, this is where we have to draw the line. I want to be clear that these assaults do not come with the territory," O'Neill said last night. Despite that statement, O'Neill promised that the NYPD would continue to police protests "the way that we've been policing them."