Student unrest at UCLA was further exacerbated when President Richard Nixon ordered the invasion of Cambodia and the National Guard fired upon student protesters at Kent State. Hundreds of student protesters marched through campus and vandalized several buildings, including an ROTC building, and part of Murphy Hall. Chancellor Young declared a State of Emergency and summoned the LAPD on campus; 74 arrests were made and 12 people reported injuries. This demonstration and many others at UC campuses throughout the state caused then-Governor Ronald Reagan to shut down the state's colleges and universities for the first time in California's history.