Mann & Mitchell represents individuals facing criminal charges and plaintiffs asserting constitutional and civil rights claims. In criminal cases we represent defendants in federal, state, and military proceedings. Robert Mann has tried a large number of cases to a jury, ranging from homicides to white collar offenses. He has also argued before the United States Supreme Court, the Rhode Island Supreme Court, the United States Court of Appeals for the First Circuit, the United States Court of Appeals for the Second Circuit, and the United States Army Court of Military Review. The office also represents plaintiffs in civil rights cases, generally but not exclusively in the area of police misconduct and discrimination.

The office has a strong belief that the criminal justice system is increasingly punitive. In the federal system, mandatory minimum sentences and the sentencing guidelines result in draconian consequences. Often, the criminal justice system fails to recognize the special circumstances of an alleged offender, particularly when mental health issues are implicated. For non-citizens, the immigration consequences of a criminal conviction seem manifestly unfair. A new challenge, in both the criminal and civil rights areas arises from government regulation of activities on the internet. The office has experience in representing people charged with computer related offenses. The office tries to aggressively protect individuals whose freedom is threatened.