the orange county and central park tickets are counter examples to your proposed "if people are so mad, they should call the cops" statement. clearly, in these instances, law enforcement has gotten involved, and the involvement was very likely induced by reports from irate citizens. at least one of the orange county ticket runs was when a group ride's first riders stopped at a stop sign, and then the rest of the group rolled through acting as a single giant vehicle. it wasn't one cop sitting and watching. there were multiple cops there ready to ticket multiple riders. in another group ride, police motorcycles followed the ride for pretty much the duration (~2 hours) looking for run stop signs/red lights and had cars waiting at intersections in case there were violations. sounds like a pretty concerted effort to me.