Dispersed, converging on intersection of Castro, Market and 17th Streets

Mel Henderson with Joe Hawley and Alfred Young, Yellow Cabs (19th November 1969)
Geolocation
Description
Henderson arranged for one hundred Yellow Cabs to converge at a major intersection simultaneously, creating a traffic jam. Event was photographed, videotaped, and filmed from the ground, helicopter, and heliocourier.(Lewallen 1981: 131)