The Met CPS claims they lack sufficient evidence to bring charges against individuals. In my opinion, the person who pulled the trigger is responsible for the death. Those who created the policy, those who misidentified the suspect, and those who helped to subdue him, are accessories to the killing. But, as chickenfeet2003said, "It seems pretty clear that the government would rather save face than fire the callous, incompetent and malicious bastards responsible for a completely unnecessary killing."