social movements 1970's By Articchef Jan 2, 1970 marked a major declne in student anti-war movement Feb 10, 1970 My Lai Massacre Became public and ignited outrage Apr 10, 1970 U.S. forces enter Cambodia Presdient Nixon, who previously comitted to a planned withdrawal, announced that troops entered Cambodia Apr 28, 1970 Invasion of cambodia May 4, 1970 National Guardmen fire upon prtesters and killing 4 and wounding 16 Apr 9, 1971 First Advocacy center for people with Disabilities in U.s> was founded Jun 13, 1971 New York Time Publish firt installment of Pentongon Papers Sep 1, 1972 Berkely Center built. (independant living) Jan 1, 1973 Nixon announced effective end of U.S. Involvment Oct 10, 1973 Rehabilitation Act (section 504) Very important to people with disabilities