UCI police called in officers from other agencies... Even Santa Ana PD.
Costa Mesa and Tustin PD are there, per Smoke N Scan.
https://www.youtube.com/watch?v=pBi_eSiluMk
The PBS Frontline documentary, “Crisis on Campus,” examines how university leaders, some of whom have faced congressional hearings, navigated the challenges of responding to heated rhetoric and division on their campuses and balancing free speech with the need to prevent harassment and discrimination.
https://www.youtube.com/watch?v=HESNxDn6Efs