I wasn’t there, and it does look like he had an attitude… No doubt he should have left when the officers asked. However, there were many witnesses so perhaps it is worth trying to get the entire story.
http://www.msnbc.msn.com/id/15731040/
"When asked whether the student resisted when officer attempted to escort him from the building, the witness said, “In the beginning, no. But when they were holding onto him and they were on the ground, he was trying to just break free. He was saying, ‘I’m leaving, I’m leaving.’ It was so disturbing to watch that I cannot be concise on that. I can just say that he was willing to leave. He had his backpack on his shoulder and he was walking out when the cops approached him. It was unnecessary.”
http://www.theregister.co.uk/2006/11/16/ucla_taser_incident/
Laila Gordy, “a fourth-year economics student who was present in the library during the incident”, claimed officers threatened to zap her “when she asked an officer for his name and his badge number”.
http://www.latimes.com/news/local/la-me-cellcamera16nov16,0,4794591.story?page=1&coll=la-home-headlines
He continued to refuse," the statement said. “As the officers attempted to escort him out, he went limp and continued to refuse to cooperate with officers or leave the building.”
Witnesses disputed that account, saying that when campus police arrived, Tabatabainejad had begun to walk toward the door with his backpack. When an officer approached him and grabbed his arm, the witnesses said, Tabatabainejad told the officer to let go, yelling “Get off me” several times.
The incident was the third videotape of an arrest to surface in the last week in Los Angeles.
One video showed a Los Angeles Police Department officer dousing a handcuffed suspect in the face with pepper spray as the suspect sat in a patrol car.
Any way you cut it, the guy was handcuffed on the ground and continued to get tasered over and over again. How is a person in that state a threat to the officers? It is clearly excessive force to walk into a library, handcuff a student and taser him over and over again. If not, how many times to taser a passive handcuffed college student would you consider excessive, 10, 20 50 times?