Lifestyle Ten Awesome Critical Mass Instagram Photos By Shaina Tsan | September 28, 2012, 11:52 pm @davekeane Pages: 1 2 3 4 5 6 7 8 9 10 Tag: Bicyclists, Critical Mass, Instagram, San Francisco From Our Sponsors UPCOMING EVENTS APR 28 Abby Govindan: How to Embarrass Your Immigrant Parents at Cobb's Comedy Club MAY 08 Josh Gondelman at Cobb's Comedy Club MAY 04 Lorene Anderson : TROPOSPHERE at Scott Richards Contemporary Art The Best Events Every Week in Your Inbox Thank you for subscribing!