HELP US END MASS INCARCERATION The Prison Policy Initiative uses research, advocacy, and organizing to dismantle mass incarceration. We’ve been in this movement for 22 years, thanks to individual donors like you.

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Thank you,
Peter Wagner, Executive Director
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Graph showing number of people in Massachusetts prisons and number of people in Massachusetts jails from 1978 to 2015

(Graph: Joshua Aiken, May 2017)

thumbnail for report Era of Mass ExpansionThis graph is a part of the Prison Policy Initiative report, Era of Mass Expansion: Why State Officials Should Fight Jail Growth.

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