The Militant is the weekly newspaper of the Socialist Workers Party. It is the only printed weekly newspaper published by any political party in the United States. A recent issue of The Militant had a news story about a hunger strike in certain California prisons. Florida prison officials have refused to allow that issue to be delivered to the 32 prisoners who subscribe to The Militant. See this story from The Militant. Florida prison officials say that if their prisoners read that issue, they may also launch a hunger strike. However, many other newspapers also covered the hunger strike.
It seems somewhat likely that, if the prison doesn’t back down, the ACLU will help The Militant to sue the prison officials.