David Cameron has vowed to get tough with rioters, and the usual suspects complain. What about the rights of the looters, they ask. What about the freedom to tweet #fire in a crowded theater?A legitimate democratic government fighting looters and rioters (as opposed to peaceful demonstrators) has the right to restore social order by all necessary means. Those who indulge in mass criminality have no right to complain when the state uses force to restore order. If unusually dangerous and widespread episodes of criminality call out unusually harsh, brutal and invasive measures to restore order, the rioters have no one to blame but themselves.By the same token, measures that are justified in an emergency are not to be used on a routine basis. A fire brigade has the right and the duty to break into a house and spray water all over the furniture when the house is burning down. The situation is quite different when things are calm. Fire prevention is a different kind of job than fire fighting, and Britain will need to make that shift in due course.With 300 years of parliamentary government, a free press and a healthy opposition, no country in the world has as much experience at managing the tradeoff between liberty and order as Britain. The human rights crowd should take a deep breath and relax.