Just saw this posted on another non motorcycle forum this morning. No idea whatsoever what happened between the bikers and the driver of the Range Rover to kick this off. I am guessing the driver found himself in the middle of a bunch of thug types and did not realize that just the process of trying to get through traffic was dangerous.
I am seeing more and more of this kind of rider, recently up in Portland I saw a group shut down the freeway and then again in SF. Planned ride or not, bad people in that group....
http://www.dailymail.co.uk/news/article-2438620/Shocking-video-Range-Rover-crashing-bikers-surround-vehicle-annual-street-ride.html