The four-day <a href="https://en.wikipedia.org/wiki/Attica_Prison_riot" id="mwATk" rel="mw:WikiLink" title="Attica Prison riot">Attica Prison riot</a> begins, eventually resulting in 39 dead, most killed by <a href="https://en.wikipedia.org/wiki/New_York_State_Police" id="mwATo" rel="mw:WikiLink" title="New York State Police">state troopers</a> retaking the <a href="https://en.wikipedia.org/wiki/Attica_Correctional_Facility" id="mwATs" rel="mw:WikiLink" title="Attica Correctional Facility">prison</a>.