Commonwealth v. Warren Case Brief
Audio lesson available for this case
LSD+ subscribers can listen to a recorded discussion of this brief - the full facts, holding, and reasoning in audio form.
Complete case briefs with LSD+
Every LSD.Law brief pairs a full IRAC analysis with opinion summaries at three levels of depth, written by a team of Harvard Law and MIT graduates - a quick synopsis when you are pressed for time, the complete reasoning when you need to go deep.
Adaptive Case Views
Toggle between Flash, Standard, and Expanded. Get what you need, when you need it.
Exam-Ready IRAC Format
We deliver the precise structure professors look for in exam answers.
Complex Cases, Clarified
We break down dense legal reasoning into something digestible, helping you grasp core concepts.
Case Brief Summary & Legal Analysis
tl;dr: Police stopped a Black man based on a vague description of burglary suspects. He fled. The court found the stop unconstitutional, ruling that the vague description and his flight, especially when viewed in the context of racial profiling data, did not create reasonable suspicion.
Legal Significance: This case established that flight from police, particularly by a Black man in Boston, does not automatically suggest consciousness of guilt and should be given little weight in a reasonable suspicion analysis, especially when other factors providing individualized suspicion are absent.
Case Facts & Court Holding
Key Facts & Case Background
Following a report of a breaking and entering, a Boston police officer received a vague description of three Black male suspects: one in a “red hoodie,” one in a “black hoodie,” and one in “dark clothing.” The victim also reported a stolen backpack. Approximately 25 minutes later and about one mile from the crime scene, an officer observed the defendant, Jimmy Warren, and a companion, both Black males wearing dark clothing. The officer called out to them, and they jogged away into a park. Another officer, Christopher Carr, intercepted them as they exited the park. When Carr said, “Hey fellas,” Warren turned and ran. Carr commanded Warren to stop and then pursued him. During the pursuit, after the command to stop, Carr observed Warren clutching his pants in a manner consistent with carrying a firearm. Police arrested Warren and recovered a firearm nearby. The trial court denied Warren’s motion to suppress the firearm, finding the stop was supported by reasonable suspicion.
Court Holding & Legal Precedent
Issue: Did the police have reasonable suspicion to conduct an investigatory stop where the justification was based on a vague and general description of suspects, the defendant’s temporal and geographic proximity to the crime, and his flight from the officers?
No. The police lacked reasonable suspicion for the investigatory stop. The totality Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute
IRAC Legal Analysis
About IRAC analysis
IRAC (Issue, Rule, Analysis, Conclusion) is the structure professors expect in exam answers. Each LSD.Law brief states the issue, the governing rule with citations, the court's application of that rule, and the conclusion - the same reasoning pattern you will use on exams and in practice.
Legal Issue
Did the police have reasonable suspicion to conduct an investigatory stop where the justification was based on a vague and general description of suspects, the defendant’s temporal and geographic proximity to the crime, and his flight from the officers?
Conclusion
This case sets a significant precedent in Massachusetts by formally allowing courts Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco
Legal Rule
An investigatory stop requires that police have a reasonable suspicion, grounded in Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. E
Legal Analysis
The Massachusetts Supreme Judicial Court systematically dismantled the factors the lower court Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum. Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum. Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum. Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veni
Flash-to-Full Case Opinions
Flash Summary
- Police lacked reasonable suspicion for a stop based on a vague