No matter how you feel about how this kid was asking to simply come up and remove him physically then tase him for not going "quietly" even though he was not resisting physically is completely out of line. The cnn article has the video of the initial contact.
Completely out of line.
http://www.cnn.com/2007/US/09/18/stu...tml#cnnSTCText
Edit: sorry about the youtube part :P