Michael Sostre had been imprisoned for his differing legal and political ideas and beliefs/. This ruling signaled to prison wardens that solitary confinement had limits a s well and could not be abused like it had been in the past.
Explanation:
Sostre was very active while serving time in prison, acting as legal council to many inmates and also winning two landmark cases. His main focus was to fight against discriminatory prison practices which unfairly targeted black political inmates.
