Poet and activist John Sinclair,73, reads one of his poems entitled "Spiritual" to the guitar sounds of Laith Al-Saadi during the annual Hash Bash on the Diag on the University of Michigan campus in Ann Arbor, MI on April 4, 2015. (Photo by Mark Bialek)
Comedian Tommy Chong,76, speaks during the annual Hash Bash on the Diag on the University of Michigan campus in Ann Arbor, MI on April 4, 2015. "All pot use is medical," said Chong. (Photo by Mark Bialek)
Anti-war activist Tom Hayden of Los Angeles speaks on the University of Michigan Diag before a Teach-In + 50, marking the 50th anniversary of the start of campus protests against the Vietnam War.
