USC April 15, 2024 11:24 pm USC valedictorian commencement speech canceled USC announced that the valedictorian will not be allowed to deliver the 2024 commencement speech during graduation, citing security concerns, Robert Kovacik reports for the NBC4 News on April 15, 2024. US & World Videos 2:00 Classes canceled as Line Fire flare-ups pose more danger 2:13 East and Gulf coast port workers go on strike 2:22 New video shows deadly confrontation in Beverly Hills 2:52 Family of murdered boxer seeks justice 2:50 California offering little help for homeowners duped by contractor