Cops should not use drugs, how do they get away with it?

I beat the odds. I am clean, I am in college and I have no one because I choose a higher caliber of person to associate with then when I was 17. Hey check your stats that was a decade ago. Why dont you go pick up that guy standing at the store with his flag hanging out with an ounce of crack or the brother giving crank to minors for kicks. Better yet go get the dealer that has his son break up the weed and put in the bags or is in the kitchen while the dope is being cooked? Bad choices do not make bad people. Bad politics make mad people. Please arrest the drunk guy who knocks on doors in the complex at 2 am begging for money and ciggys?