Deadly CA crashes end with man beaten by a mob

This is what is called societal breakdown:

In a bizarre and deadly chain of events, a pedestrian was twice struck by hit-and-run drivers, the woman who came to his aid was also hit, and finally the driver trying to help her was beaten and robbed by a mob, police said Friday.

The crashes on a busy Los Angeles-area boulevard left a man dead, a woman injured, a suspect arrested, and detectives stunned.