MASS 
 BP Shutdown - Fri 5/28/10 6p
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 50F NW2-5 Clear
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Chicago Critical Mass
BP Shutdown
Fri May 28th 2010 6p

Critical Mass is a very large group bike event, gathering in Chicago the last Friday of every month for 20+ years. Leaves Daley Plaza downtown (50 W Washington St) around 6pm.
Contact: Jami Krause
Facebook.com/ChicagoCriticalMass
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