November 13, 2008 10:01 am X-mas Countdown: Perfect Tree for the Plaza It takes a whole lot of work to become the most important tree in America. Local 1:45 NYPD enters Columbia University in riot gear to clear protest 3:24 Mayor Adams and the NYPD urge protesters to leave Columbia University 18:33 NYC Mayor Eric Adams says Columbia University protesters include outside actors 15:40 Aerial views of Hamilton Hall at Columbia University 2:17 Dramatic bodycam video shows the moments New Jersey Transit officers save a choking child