New technologies have emerged to make it possible for law enforcement agencies to use non-lethal force in some cases, according to the UN Special Rapporteur on extrajudicial, summary or arbitrary executions.

But Christof Heyns says these “less lethal weapons” such as chemical irritants, electrical shocks and rubber bullets can be challenging to use without proper training and can still result in death.

Reem Abaza recently spoke with Mr Heyns on the side lines of an event on police reform at the UN 13^th Congress on crime prevention and criminal justice, which recently took place in Doha, Qatar.

She began by asking him when and how police should use force.

Duration: 4’01”