It was not a NYC rally, it's those dumb ass Critical Mass Bicyclists that think they can just stop traffic, break the law, cause accidents and generally get in peoples way.

I think one got ran over by a car a few weeks ago too.

Read up.

http://www.nytimes.com/2008/07/29/nyregion/29critical.html?scp=8&sq=critical%20mass&st=cse

http://www.nytimes.com/2008/08/02/nyregion/02about.html?scp=1&sq=police%20lies&st=cse

It's happened before:

http://www.nytimes.com/2008/08/02/nyregion/02about.html?scp=3&sq=critical%20mass&st=cse