The Supreme Court issued a substantive ruling regarding the rights of individuals in violation of a probation or parole sentence. It held that a previously sentenced probationer is entitled to a hearing when his probation is revoked. More specifically the Supreme Court held that a preliminary and final revocation of probation hearings are required by Due Process; the judicial body overseeing the revocation hearings shall determine if the probationer or parolee requires counsel; denying representation of counsel must be documented in the record of the Court. Decided May 14, 1973 (argued January 9, 1973). Opinion of the Court: Powell Dissenting: Douglas. Topic: Other criminal sentences. Gagnon v. Scarpelli, 411 U.S. 778 (1973), was the second substantive ruling by the United States Supreme Court regarding the rights of individuals in violation of a probation or parole sentence. Wiki link