UK marks 3rd anniversary of Manchester Arena attack

People grieve at a memorial of the Manchester Arena attack in Manchester, Britain, May 22, 2020. Manchester on Friday marked the third anniversary of the terrorist attack which killed 22 people and injured hundreds. The attack happened when Salman Abedi detonated a bomb at the end of a concert by U.S. pop singer Ariana Grande on May 22, 2017. (Photo by Jon Super/Xinhua)