That's crazy. I'm 19 and not a cop, and I know I could beat down any little 8 year-old. No need for handcuffs, just sit on the kid.
This reminds me of somethin a friend was tellin me today. Some 13 year-old was driving a car that had been reported as stolen...got pulled over by a highway patrol officer and ended up with 10 bullets in his back (the kid). Hopefully I can find the article.