Last weekend was the 40th anniversary of Ann Arbor’s Hash Bash Festival. For those of you who don’t know, Hash Bash is a gathering of Michigan’s finest medical marijuana activists, proponents, and smokers. The day consists of speakers, live music, vendors (usually, but this year the Ann Arbor City Administrator banned all vending…the dick), rallying, and of course, lots of delicious buds – all conveniently centered around University of Michigan’s Diag. The event takes place at noon on the first Saturday in April every year. But for what reason, exactly? You’re about to find out.