New research on the Chicago Police Department finds that working with fellow cops who have been accused of excess force increases the odds that an officer will face similar charges later on.
Many officers haven't been trained to comply with California's law prohibiting police from turning over those they arrest to federal immigration agents.
Facial recognition technology can be used to prevent criminal activity. But, in London, one study shows the police system gets it wrong 81 percent of the time.
A Guatemalan policeman prepares to take part in an early morning raid during which a suspected human trafficker was taken into custody on May 29th, 2019, in Guatemala City.
Police officers remove protesters from a blockade on Waterloo Bridge during the second day of a coordinated protest by the Extinction Rebellion group on April 16th, 2019, in London, England.
Algerian security forces use a water canon to disperse students taking part in an anti-government demonstration in the capital Algiers on April 9th, 2019.
New research finds that minority youth who are confronted by officers are more likely to subsequently engage in delinquent behavior than those who don't face such encounters.