That's what the Cambridge police wanted you to think. In fact, he died from a reaction to pepper spray. His face had been severely beaten by patrolmen, and he was sprayed while handcuffed to the booking desk. EMTs were called but turned away at the door of the lockup by police who said Sean was ok. Autopsy results were covered up. Police Advisory Board would not investigate. Search farther for protest marches and local Cambridge paper articles.
Police rules required victim of pepper spray to be taken to hospital within minutes of spraying, so they covered up what they could.
Sumner Slichter died in 1959.
Charles A. Sumner died in 1903.
Sumner Paine died in 1904.
Sumner White died in 1988.
Sumner Pike died in 1976.
Geoffrey Sumner died in 1989.
Jethro Sumner died in 1785.
Sumner Blossom died in 1977.
Mary Sumner died in 1921.
Donald Sumner died in 1990.
Sumner Ely died in 1857.
Fred Sumner died in January 1942.