"Back in the "good old days", cops weren't being shot at by young kids."
And also back in the "good old days" people understood that shooting people down-especially kids-without good cause is a crime.
I lived across the street from a cop who when confronted with an angry husband involved in a domestic dispute with his wife, hesitated, when that husband turned toward the cop with a gun in his hand. Apparently, he thought that he could reason with the husband. Instead, the husband shot the cop dead. He left a wife and three kids.
When you grow the balls necessary to train to be an officer of the law, instead of just an internet vigilante, feel free to put on a badge and a uniform and walk around knowing that the world is full of bad guys who would like nothing better than to see you dead. Then, reflect.