The way I see it, this dude wasn't a kid, he was a fully grown six five 250 pound man, he was high, and it's shown on video Brown was aggressive and unrepentant. Clearly he was a bully and if he had the presence of mind to rob a store, what's to stop him from assaulting a police officer?
Darren Wilson and his trusty, police issued sidearm .
"I got news for you. If it wasn't for the toilet, there would be no books." --- George Costanza.