It’s unlikely many motorists knew why a group of around 20 protesters staged a sit-in this afternoon at the intersection of Westwood and Wilshire Boulevards in Los Angeles, which might have helped their cause. The protesters were union workers from the University of California upset about contract negotiations.

https://twitter.com/juliaosaurs/status/360913882287591424

A quick survey of Twitter suggests that playing in traffic is not a good way to promote solidarity or sympathy.