Investigate this

While the CSPD investigates reports that its officers employed excessive force at The 2007 John O’Donnell St. Patrick’s Day Parade, you can check out this collection of news segments which feature the St Patrick’s police surge on home-video footage. (Courtesy of Mark Lewis)
Fast forward to these select items:
At the 5:27 mark, Frank Cordero in an illegal choke hold,
At 5:04, Molly Eaves being held by the throat,
At 3:30, Elizabeth Fineron knocked down by two police officers, and
At 3:14, dragged swifty across the pavement.