As people filled the Mall in DC, Manuel Oliver, whose son, Joaquin, was one of the students killed in Parkland, addressed the crowd. “Our elected officials betrayed us and have avoided the responsibility to end gun violence,” he said, according to NBC News. Near the National Museum of African American History and Culture, organizers set up a field of artificial flowers to represent people who died in gun violence nationwide. Mayor Muriel Bowser drew cheers as she urged lawmakers to pass mandatory background checks and ban assault rifles. “We don’t have to live like this,” she said, adding that people in other countries “don’t live like this.” Some children in the crowd had traveled from Newtown, Connecticut, where a gunman killed 20 students and six adults at Sandy Hook Elementary School in 2012.