A crew of rowdy protesters, including three academics, were charged with assault and resisting arrest Tuesday in Manhattan Supreme Court​ in the attack on cops during an anti-police demonstration ​last year ​on the Brooklyn Bridge.

Baruch College Professor Eric Linsker, 29, Barnard instructor Cindy Gorn, 29, and Rutgers University instructor Zachary Campbell, 32, ​all pleaded not guilty before Justice Jill Konviser.

Robert Murray, 43, a union rep, and Jarrod Shanahan, 29, a grad student, also pleaded not guilty.

The group faces raps for assault, resisting arrest and other charges.

Linsker allegedly sparked the melee Dec. 13 at a Millions March demonstration ​when, authorities have said, he threw metal garbage cans at officers.

The other agitators were caught on video trying to stop the arrest and one of the cops ended up with a broken nose​, authorities said.