The United Nations Committee Against Torture has determined the use of taser stun guns can be a form of torture and violate the UN Convention Against Torture. The committee said the stun guns cause extreme pain and in some cases death. Four men in the United States and three in Canada have died after being shot with tasers in the past two weeks. Earlier this month, a video emerged showing Canadian police tasering an unarmed Polish tourist in a Vancouver airport. The man died after he was shocked twice with 50,000 volts. The stun gun manufacturer Taser claims that no deaths have ever been definitively connected to the taser.