Massachusetts
Norfolk County
Sacco and Vanzetti were convicted of a 1920 double homicide and robbery. They were executed in 1927. Governor Dukakis posthumously pardoned the pair in 1977.
Suffolk County
Lawyer Johnson was sentenced to death for a 1971 Roxbury murder. He was exonerated in 1982.
Read more about this topic: Overturned Convictions In The United States