US immigration enforcement agency ICE has awarded a $16.7 million (€14.33 million) contract to buy 6,000 pairs of gloves that can deliver electric shocks.

Since the Department of Homeland Security (DHS) earlier this month announced its plans to use the gloves, there has been strong criticism by human rights groups and the Democrat opposition.

ICE is already facing intense criticism for its aggressive raids and tactics.

Since US President Donald Trump's crackdown on immigration began, several people have been killed in encounters between ICE officers and immigrants and people protesting against the agency.

How do the gloves work?