18 years ago on December 20th, 2005 Transit employees go on strike, halting bus and subway service for nearly three days References: Wikipedia
77 years ago on December 20th, 1946 'It's a Wonderful Life' premieres at the Globe Theatre on 46th Street
9 years ago on December 20th, 2014 NYPD officers Rafael Ramos and Wenjian Liu are executed while sitting in their vehicle at Myrtle Avenue and Tompkins Avenue in Bed-Stuy by a career criminal seeking to murder police officers in retribution for the deaths of Eric Garner and Michael Brown