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 2:41 Attack leaves woman brain dead, family demands justice 2:40 Man killed on Metro bus was tourist from Mexico 0:55 Thieves hit convenience stores in Orange County 2:33 Man steals LAPD cruiser with officer inside 2:24 Man steals LAPD patrol SUV in downtown LA