At least four investigations are under way. The cops are conducting an internal review of their behavior at the scene; the Denver Health Authority is conducting an internal review of paramedics' behavior at the scene; Denver District Attorney Bill Ritter--with visions of the ongoing controversy over last year's Jeff Truax shooting dancing in his head--has wisely called for an external review by a special prosecutor; and even the very external FBI has gotten into the act, with an investigation into whether Webb's civil rights were violated. (Presumably, there's no question that DeHerrera's were.)
Somewhere, in all of that, the truth may emerge. But the anatomy of this muddle won't be as black-and-white as the Rodney King case.