Did California's actions violate the right of expressive-association and constitute content-based-discrimination?

QUESTION PRESENTED ; | The Constitution guarantees a right to expressive association for activities protected by the First Amendment. Similarly, the Constitution limits content-based regulations that prohibit public discussion of.an entire topic. Petitioner and other inmates filed group grievances that challenged constitutional violations pursuant to California regulations. The grievances were arbitrarily rejected and Petitioner filed a civil lawsuit. In retaliation California banned the group grievance regulations that had been in effect for 30 years. Did California's actions | violate the right of expressive association and constitute | . content-based discrimination? : | | | | | | | | | | . |