Lifestyle Ten Awesome Critical Mass Instagram Photos By Shaina Tsan | September 28, 2012, 11:52 pm @davelloyd Pages: 1 2 3 4 5 6 7 8 9 10 Tag: Bicyclists, Critical Mass, Instagram, San Francisco From Our Sponsors UPCOMING EVENTS SEP 16 Pulp at Bill Graham Civic Auditorium MAY 16 Cobb's Comedy Showcase at Cobb's Comedy Club JUN 13 ODESZA - The Last Goodbye Finale at Greek Theatre The Best Events Every Week in Your Inbox Thank you for subscribing!