US police are under pressure not only for the killing of an unarmed teenager in Ferguson, Missouri, for which a grand jury decided on Monday not to indict the police officer, but also for the military-style response to the sometimes violent protests that followed.
The sight in August of police in camouflage gear, backed up by armoured vehicles and brandishing assault rifles, was a reminder that some US police departments have recently acquired US military-surplus hardware from wars abroad.
Yet many other law enforcers around the world have rules of engagement that allow lethal force to be used relatively freely.
Venezuela’s Interior Ministry decrees that, when peaceful methods of resolution have failed, police must warn violent demonstrators that there will be a “progressive, differentiated use of force.” While no firearms must be carried for peaceful demonstrations, when things turn violent, the emphasis is on avoiding harm to children, pregnant women and the elderly.
Afghanistan’s police, often themselves the target of armed attacks, are officially authorised to respond with weapons “and explosives,” albeit only after other methods have failed, and no fewer than six warnings have been issued.
But for every regulation that gives police wide scope to use firearms, there is another code that sharply limits their use.
Mexican and Indian riot police follow defined escalation protocols that go from verbal warnings to physical constraint, tear gas, water cannon or pepper spray, rubber bullets or baton rounds, and then use of firearms.
Yet while Mexican police commanders can decide when to escalate, India’s Rapid Action Force requires approval from an on-the-spot magistrate for each new step.
Many countries spell out that any use of firearms is a last resort, though this can be defined many ways.
Britain, Serbia, Bosnia and the Philippines allow guns to be fired only if a life is at risk. Britain stands out for its insistence that “individual officers are accountable and responsible for any use of force and must be able to justify their actions in law.”
Many West European countries, meanwhile, allow firearms to be used “where necessary” to detain suspects or to prevent a serious crime.


