the biker that started it all (according to the video) has been arrested:
http://jalopnik.com/biker-at-start-o...ste-1433776499
"28-year-old Christopher Cruz can be seen in the video (and in the screenshot above) in a white t-shirt slowing down in the middle lane of the West Side Highway, right in front of the now-famous black Range Rover driven by 33-year-old Alexian Lien with his wife and two-year-old in the car. Cruz got hit by the Range Rover for this brake check and was later hospitalized and released for minor injuries, reports the New York Post
The police have since arrested Cruz and thrown the book at him, effectively marking him responsible for the half-hour chase that ended with Alexian Lien beaten and his car smashed. Police charged Cruz with reckless endangerment, reckless driving, endangering the welfare of a child, and menacing, reports the New York Post"