USC cancels main graduation ceremony amid controversy over valedictorian speech, protests Citing "new safety measures,'' USC announced it's canceling the main graduation ceremony that had been planned for May 10. Citing "new safety measures,'' USC announced it's canceling the main graduation ceremony that had been planned for May 10. Citing "new safety measures,'' USC announced it's canceling the main graduation ceremony that had been planned for May 10. Citing "new safety measures,'' USC announced it's canceling the main graduation ceremony that had been planned for May 10. LOS ANGELES (KABC) -- After facing scrutiny over its decision to cancel its...