You know, I really do get tired of the culture of whining that occurs when the police do their jobs. Like you said, sometimes people have to learn the hard way. If they hadn't zapped the kid, and instead handcuffed him, people would still be up in arms. "WHY DID THEY HAVE TO HANDCUFF A KID?!?!?!"
"In case you ever wondered what it's like to be knocked out, it's like waking up from a nightmare only to discover it wasn't a dream." -Forrest Griffin