Daunte Wright case: why Tasers have failed to stop police killings

Experts argue that Tasers expand the repertoire of violence' and can have deadly consequences

Tasers are often cited as a crucial tool in combating police violence in America, with proponents claiming that the less lethal" weapons can help departments avoid deadly encounters.

But the police killing of Daunte Wright in Minnesota - in which officials say an officer mistook her gun for her Taser - has resurfaced criticism of stun guns.