Ann Arbor News, 01 Dec 2011 - John Sinclair had the worst seat possible for the freedom rally held in his own name at Crisler Arena on Dec. 10, 1971. But he didn't miss a minute of the show. Sinclair, then 30, was sitting in his cell at the state prison in Jackson throughout the concert, serving 10 years for giving two joints to an undercover police officer.