Policing - a lottery that rewards malicious negligence

John Yates, assistant commissioner, lead counter-terrorism officer, has resigned as a result of the phone hacking scandal. He is being replaced for the time being by Cressida Dick. Ms Dick, we know, has prior experience, helping keep London safe from the scourge of Brazilian electricians. For all she knows it could happen again. If it does certain newspapers will be no doubt be on hand to spread police smears and lies.