MASS 
 Anniversary - Fri 8/28/1998 6p
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UndieMass
Anniversary
Fri Aug 28th 1998 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: Michael Burton
ChicagoCriticalMass.org
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CCM RT @mattzollerseitz: I like that STAR WARS is now a progressive thing that makes the right wing angry.
CCM The underwear/swimsuit ride tonight map. #bikechi #chicago meet at Daley plaza around 5:30 ride leaves 6ish.
CCM Forsure I have had to take Washington this week & you are so right
CCM About 20 idling trucks on Washington Ave. #buildingBOOM #chicago
CCM RT @paulavelde: Cheers to 4 years! #birthdaydivvy @DivvyBikes #Uptown #bikechi
CCM RT @activetrans: From 7-30 to 8-11, car-free explorers can enjoy a scavenger hunt in Chicago. First clues posted this...
CCM Wow! What perfect weather for a #bikechi home after a long day.
CCM RT @CJettR: Was @CBrandsCareers @cervezacorona truck. Can you tell yr chicago distro prkng in the #bikechi lane is da...
CCM Damn that sucks
CCM Since the day it was opened
CCM RT @BikeReportChi: Might wanna skip #chiLFT if riding north tomorrow PM- big headwinds expected. Otherwise, bike fore...
CCM RT @CycleConfident: How To: Fit A Child's Bicycle Helmet #Cycling #Safety via @TTLWomenCycling https://t.co/NOjRqFu…
CCM Forsure!!
CCM RT @SarahJindra: METRA ALERT: UP-N trains stopped both directions near Wilmette after IB train #320 hit a pedestrian.
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