The findings came as the United States faced questions over police violence at the United Nations Human Rights Council in Geneva. The questioning came as part of a universal periodic review, which takes place every four years. Member states grilled the United States over its failures to close Guantánamo prison, prosecute perpetrators of CIA torture and address violence against Native American women. But the review focused on racism and police brutality, an area where U.S. Justice Department official James Cadogan acknowledged the United States must improve.

James Cadogan: “The tragic deaths of Freddie Gray in Baltimore, Michael Brown in Missouri, Eric Garner in New York, Tamir Rice in Ohio and Walter Scott in South Carolina have renewed a longstanding and critical national debate about the even-handed administration of justice. These events challenge us to do better and to work harder for progress through both dialogue and action.”

Attending the review of the U.S. human rights record in Geneva was the brother of Rekia Boyd, a 22-year-old African-American woman fatally shot in the back of the head by an off-duty Chicago police officer in 2012. Last month, Dante Servin was found not guilty after killing Boyd and shooting and injuring her friend. Servin claimed he thought the friend had a gun, although none was found. Martinez Sutton called for justice in his sister’s death.

Martinez Sutton: “I just want to see some justice take place. I just want to see justice. You know, they let this guy walk free, not guilty. My sister is dead. They tried to blame it on the guy that got shot in the hand, but all the charges was dismissed against him, so who’s going to take this? My sister didn’t kill herself. You know? I would love for the Department of Justice to take in and take a look at this case.”