I'm sure all officers with a taser are also familiar their agency's policies and procedures on the use of them. Does that mean the use them in the proper way every time?
Actually I have been following the debate on taser usage for some time (since Robert Dziekanski was tased at the Vancouver airport) and have read plenty of articles with viewpoints from both sides (and not just sensational media). I don't profess to know everthing about tasers, but I do know when I see something that disturbs me, and that video did.
I'm not alone LA Times
Some quotes from the article:
"Last year, the American Medical Assn.'s Council on Science and Public Health reviewed the physiological effects of Tasers and deaths after Taser shocks by police. Based on information gathered from 1985 to March 2009, the study concluded that stun guns are used too frequently and "may contribute to the death of suspects directly or indirectly."
Mary Catherine Roper, an attorney for the American Civil Liberties Union in Philadelphia, echoed that, telling the AP she didn't understand why the officer used a Taser.
"How long can he really run around out there?" Roper said of the fan. "In this situation, he's not dangerous, he's not getting away."
In this situation you would have done exactly as this officer did? if not how would you have handled it?