Harvard event with Yo-Yo Ma and Stephen Colbert cut short by fire alarm

• A Harvard event featuring Yo-Yo Ma and Stephen Colbert was cut short by a fire alarm.
• The Harvard Graduate Students Union, which has been on strike since Oct. 27, urged Colbert and Ma to cancel the event.
• Stephen Colbert, who supported striking Hollywood writers in 2023, was accused of crossing a union picket line.
• The Harvard Graduate Students Union denied involvement in the disruption.
• Yo-Yo Ma took the stage with Colbert despite the union's pleas to cancel.