UCLA Police Tasering and the Free Hand of Law Enforcement, Part 2:
From the UCLA Police report on the tasering incident at Powell Library:

At approximately 11 p.m. on Tuesday, Nov. 14, a community service officer (CSO) employed by the library was performing a nightly, routine check to insure that all patrons using the library after 11 p.m. are authorized. This is a longstanding library policy to ensure the safety of students during the late night hours. The CSO made an announcement that he would be checking for university identification. When a person, who was later identified as Mostafa Tabatabainejad, refused to provide any identification, the CSO told him that if he refused to do so, he would have to leave the library. Since, after repeated requests, he would neither leave nor show identification, the CSO notified UCPD officers, who responded and asked Tabatabainejad to leave the premises multiple times. He continued to refuse. As the officers attempted to escort him out, he went limp and continued to refuse to cooperate with officers or leave the building.

Tabatabainejab encouraged library patrons to join his resistance. A crowd gathering around the officers and Tabatebainejad's continued resistance made it urgent to remove Tabatabainejad from the area. The officers deemed it necessary to use the Taser in a "drive stun" capacity.

More later.