either by successful participation in group therapy or by agreeing to live by the rules of the prison.  Sostre's contention is that he refused to agree to obey rules that he considered an infringement of his constitutional rights.

C.  Censorship and Possession of Literature

26
Defendant Follette censored Sostre's correspondence with Joan Franklin of the NAACP, the attorney of record representing Sostre on appeal from his conviction.  Follette regularly excised from letters passing between Sostre and Miss Franklin 'objectionable' material-- anything which 'in his judgment was not relevant to Sostre's appeal.'  In accordance with Rule 47 of the Inmate Rule Book which restricts inmates' correspondence to persons on an approved mailing list, Warden Follette in late September, 1968, refused to forward a letter from Sostre to theUnited States Post Office Inspector, in which Sostre complained of Green Haven's practice of not returning to prisoners receipts for certified mail.  The district judge found that each of these actions violated Sostre's First Amendment right to freedom of speech.


27
About August 3, 1969, a month after his release from segregation, Sostre was deprived of the use of the prison exercise yard and the privilege of attending movies because he possessed 'inflammatory racist literature' in his cell.  The literature consisted of articles written by Sostre himself on paper properly in his possession.  Most of the articles consisted of extracts from magazines and newspapers which Sostre was also permitted to have and read in his cell.  The extracts included quotations from Mao Tse Tung, poetry written