This reporter saw at least three bus loads of people arrested.
QuickTime movie at 4.3 mebibytes
This was a staged event. Organizers worked with the LAPD. The march was under permit. The sit-downs were planned in advance and coordinated with LAPD. People in the sit-down complied with police orders to stand up and be cuffed. By 8:30 pm it was all over and the street was reopened.
Original: VIDEO: Hotel Workers Protest