Lifestyle Ten Awesome Critical Mass Instagram Photos By Shaina Tsan | September 28, 2012, 11:52 pm @madamebovet Pages: 1 2 3 4 5 6 7 8 9 10 Tag: Bicyclists, Critical Mass, Instagram, San Francisco From Our Sponsors UPCOMING EVENTS APR 26 Stand-Up Comedy at Mr. Bing's in Downtown San Francisco at Mr. Bing's APR 26 Feel Good Fridays at Delirium Bar MAY 03 Pardon The Interruption Live at Rancho NIcasio at Rancho Nicasio The Best Events Every Week in Your Inbox Thank you for subscribing!