Friday is the 20th anniversary ride of Critical Mass in San Francisco. Ben Trefny interviewed co-founder Chris Carlsson, along with LisaRuth Elliott (who cowrote a new book called "Shift Happens: Critical Mass at 20").
This is a web exclusive...It's a 5 minute story about a dust-up between about 10,000 Mass riders and then Mayor Willie Brown in 1997.
Take a listen. Carlsson is an excellent storyteller.
