Attica Prison riot (1971)
On Sept. 9, 1971, inmates at Attica Correctional Facility in New York took over the prison, holding 42 officers and employees hostage. After four days, then-Gov. Nelson Rockefeller ordered state troopers to storm the facility. 43 people were killed.
The assault ended the siege but triggered public outrage over the loss of life. New York state later paid millions in compensation to victims' families.
Attica became a symbol of prison reform debates, leading to improvements in inmate rights and grievance procedures, but also hardened security stances in many systems.
Shows how a single prison crisis can reshape security policies, similar to how Utah's lockdown cascaded across its two main facilities.
