quack points us to a story in which police in London Ontario came to break up a fight among some teens. Rather than say anything, asking the participants to stop, or even holding any of the participants, a cameraphone video from someone across the street shows the cop just walk into the area and immediately shoot his taser into one kid's face.
A report on the incident has the police saying that the officer acted appropriately. The mother of the kid who was tased argues otherwise. She says her son was the victim, was attacked by two other boys and was trying to defend himself when he got tased. Furthermore, the taser got stuck in his face and had to be removed by medical professionals.
Of course, if the whole thing weren't on videotape, most people would probably have taken the police officers' word on the story. But the video shows that he made no other effort to stop the fight, when it seems clear that he easily could have used less dangerous methods. Hell, by the time he gets to the area and shoots the kid with the taser, the two boys have already separated. He easily could have stopped the fight by stepping into the space between the two of them.