Hash Bash marijuana rally draws hundreds to University of Michigan Diag for smoke-in protest Updated Apr 03, 4:51 PM; Posted Apr 03, 3:09 PM 25 Facebook Share ANN ARBOR, MI – Hundreds of protesters, pot tourists and marijuana enthusiasts were at the University of Michigan Diag Saturday afternoon for a smoke-in protest in conjunction with the 50th Hash Bash rally. The annual smoke-in was a protest of marijuana laws, including the prohibition against smoking in public, according to Adam Brook, a past organizer of Hash Bash. Current organizers are holding the event virtually for the second year in a row due to the COVID-19 pandemic. Brook previously said he wouldn’t sit out another year and planned the smoke-in protest at the Diag. A large crowd in the hundreds, if not the thousands were on the Diag, and many others were walking between the Diag and downtown Ann Arbor dispensaries.