The Instigators

Matt Damon

(Rory)

Casey Affleck

(Cobby)

Ving Rhames

(Frank Toomey)

Jack Harlow

(Scalvo)

Michael Stuhlbarg

(Mr. Besegai)

Alfred Molina

(Richie Dechico)

Owen Earls

(Charlie Haggerty)

Hong Chau

(Dr. Donna Rivera)

Natalie Carter

(Mrs. Haggerty)

André De Shields

(Mr. Kelly)

Ron Perlman

(Mayor Miccelli)

Rob Gronkowski

(Rob Gronkowski)

Toby Jones

(Attorney Alan Flynn)

Slate Holmgren

(Dave Wedge)

Perry Strong

(Waiter #2 at Wharf)

Tommy Nohilly

(Police Commissioner)

Jason Furlani

(Cabinet Member)

David Gborie

(Bouncer)

Toby Onwumere

(John Wayne)

Paul Walter Hauser

(Booch)

Nathaniel Wood

(Massachusetts Trooper #1)

Mike Bash

(Boston Police Officer)

Deirdre McCourt

(Vermont Cop)

Shawn Fitzgibbon

(Quincy Cop)

Jerry Kernion

(Fire Monitor)

Nik Walker

(Hero Fireman)

Michael Rodrick

(Police on the Roof)

Don DiPetta

(Officer at Airport)

Billy Smith

(New Police Commissioner)

John Noble Barrack

(Photographer)

Robbie Dema

(Border Patrol Mountie #1)

Robert Harvey

(Border Patrol Mountie #2)

Richie Moriarty

(Jerry the Grocer (uncredited))

Craig "Radioman" Castaldo

(Radio Man (uncredited))