In pics: aftermath of Las Vegas mass shooting

People wait to donate blood outside a station of the United Blood Services in Las Vegas, the United States, on Oct. 3, 2017. At least 59 people were killed and 527 others wounded after the gunman opened fire Sunday on a concert in Las Vegas in the U.S. state of Nevada, the deadliest mass shooting in modern U.S. history. (Xinhua/Wang Ying)