That's awfully hard for somebody whose just been knocked over by a hit & run!
There nothing wrong with distinguishing between riders/pedestrians/motorists who are generally safe but violate certain laws, and those who do things that endanger themselves and others. You don't need to be a cop to let somebody know he's doing something dangerous. I don't yell at people simply for jaywalking but I certainly let people know when they walk out in front of me against the light.
Solidarity is important, but it is more realistic and honest to acknowledge that some riders are doing bad things.