MASS 
 Full Moon - Fri 9/24/1999 6p
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Polka Mass!
Full Moon
Fri Sep 24th 1999 6p

Critical Mass is a very large group bike event, gathering in Chicago the last Friday of every month for 15+ years. Leaves Daley Plaza downtown (50 W Washington St) around 6pm.
Contact: David Z.
ChicagoCriticalMass.org
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CCM RT @eringejuice: Now that I've nailed the whole "not freezing to death" thing, winter biking is actually really fun #...
CCM RT @streetsblogchi: Dig the new double-wide sidewalk on Argyle, part of @ChicagoDOT's in-progress, woonerf-inspired s...
CCM Dashcam captures moment van hits cyclist and runs over wheel
CCM RT @WheelSprocket: Want to work at Bike Expo Sale April 7-10th? We are now accepting applications!
CCM @ChicagoMayor cracking down #bikeChi pedicabs. :(
CCM RT @mashable: Daredevils scale Chinese skyscraper just for the selfie https://t.co/i1r4xOBPmy
CCM RT @StreetsblogNet: How to keep your protected bike lanes clear of snow in the winter @andersem @peopleforbikes htt…
CCM A lot are also dangerous #bikechi areas
CCM I would expect nothing less
CCM RT @ChicagoInno: .@StartupInstCHI & Freshwater Advisors team up to start scholarship for minority women:
CCM @paigeworthy Lee Diamond of Big Shoulders reality does #bikeChi tours of the different Chicago neighborhoods.
CCM @paigeworthy @ChicagoMag the @ChiNakedRide is always & fun free #bikechi event
CCM Meet the travelling doctor has CYCLED round the world for six years via @travelmail
CCM RT @jimsey: Hey #bikechi thoughts on the loop link lanes? After a month on Washington I'm really not a fan, especiall...
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