The Freakonomics blog featured interviews with three police officers in How Cops Really Want to Police. Their retelling and explanation of "street justice" can be, upon first read, humorous and cheering. Further reflection presents substantial problems with the expressed propensity to take justice into their own hands:
Everyone drinks and drives — especially those guys who [...]

I avoided coffee addiction for much of my life. I refused to drink it as an aid to staying awake during college (and subsequently fell asleep far too much during class). I stuck to tea while I worked at Harvey Mudd for two years after graduation. My coffee consumption was limited, for the most part, [...]