Marchers were led by Mayor Vincent Gray and other officials Saturday morning, and the crowd stretched for about two blocks along Constitution Avenue. Police blocked off half the road.
Participants held signs reading “Ban Assault Weapons Now” and “Gun Control Now.” Other signs carried names of victims of gun violence.
About 100 residents of Newtown, Conn., were expected at the march. It was organized in response to the December shooting there that killed 20 first-graders and six teachers.
Kara Baekey of Norwalk, Conn., she immediately thought of her two young children when she heard about the shooting. She said she decided she must take action, and that’s why she joined Saturday’s march.