Prisoners seized control of the maximum-security Attica
Correctional Facility near Buffalo, New York beginning
on September 9, 1971. Later that day, state police retook
most of the prison, but 1,281 convicts occupied an exercise
field called D Yard, where they held 39 prison guards and
employees hostage for four days. After negotiations stalled,
state police and prison officers launched a disastrous raid
on September 13, in which 10 hostages and 29 inmates were
killed in an indiscriminate hail of gunfire. Eighty-nine others
were seriously injured.