Watch: Thousands rally against gun violence at March for Our Lives protest in Washington, DC

Thousands of gun control advocates were expected to rally across the country Saturday in nationwide March for Our Lives protests to demand action on gun laws after a spate of deadly mass shootings. RELATED: Uvalde families, survivors testify as House advances gun legislation | USA TODAY Up to 50,000 protesters were expected in Washington, D.C., for a march against gun violence, according to a permit from the National Park Service. Several hundred marches were planned across the country, including in New York City, Las Vegas and Chicago. It marks the latest widespread move by March for Our Lives, which was founded by teens after 17 people were killed in a shooting at a high school in Parkland, Florida, in 2018. That year, the group rallied more than 1 million people in the nation's capital and hosted sister rallies around the country and world, ramping up public pressure to change gun laws that – four years later – have largely still not been addressed. RELAT