COMMONWEALTH v. MATTIS

SJC-11693.

493 Mass. 216 (2024)

COMMONWEALTH v. SHELDON MATTIS.

Supreme Judicial Court of Massachusetts, Suffolk.

January 11, 2024.


Attorney(s) appearing for the Case

Ryan M. Schiff ( Paul R. Rudof & Ruth Greenberg also present) for the defendant.

Cailin M. Campbell , Special Assistant District Attorney ( John C. Verner , Assistant District Attorney, also present) for the Commonwealth.

The following submitted briefs for amici curiae:

Darina Shtrakhman , of California, Matt K. Nguyen , of the District of Columbia, & Adam Gershenson for Jeffrey Aaron & others.

Andrea Lewis Hartung , of Illinois, & Marsha L. Levick , of Pennsylvania, & Oren Nimni for the Sentencing Project & others.

Jonathan W. Blodgett , District Attorney for the Eastern District, & David F. O'Sullivan , Assistant District Attorney, for District Attorney for the Eastern District & another.

Jasmine Gonzales Rose , of Oregon, Duke K. McCall, III , & Douglas A. Hastings , of the District of Columbia, Robert S. Chang , of Washington, Caitlin Glass , Neda Khoshkhoo , & Katharine Naples-Mitchell for Boston University Center for Antiracist Research & others.

Kenneth J. Parsigian , Avery E. Borreliz , Erin M. Haley , & Martin W. Healy for Carol S. Ball & others.

Benjamin H. Keehn , Committee for Public Counsel Services, & John J. Barter for Committee for Public Counsel Services.

Present: Budd, C.J., Gaziano, Lowy, Cypher, Kafker, Wendlandt, & Georges, JJ.


When it comes to determining whether a punishment is constitutional under either the Eighth Amendment to the United States Constitution or art. 26 of the Massachusetts Declaration of Rights, youth matters. See, e.g., Miller v. Alabama, 567 U.S. 460 (2012); Graham v. Florida, 560 U.S. 48 (2010); Roper v...

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