I guess I'd suggest not considering crime as a profession.
I'd personally want the guy that's good at not getting caught...
It's funny, back when I used to hang with, umm, "suspect" folks they'd look at me strange when I'd tell them the only time I've ever been in the back of a police car was after I crashed the SuperBeetle and got a ride from the investigating officer while transporting (minor quantities of) marijuana. Not enough street cred I suppose.
See my other comment. The thing about state actors is resource and information asymmetry. It can be really difficult to pick a "random person to beat up" who doesn't happen to be an undercover agent. Given there's enough of an interest.
It's a little like cheating at cards: it's much easier with two "strangers" working covertly together, than being one person. You can count the card and lose, and your partner just so happens to win...
In all societies at all times there is some system to act against the interest of some people under some conditions. That is trivial. What differentiates modern free societies, then?
Modern free societies are characterized by a system of law that not only the weak must obey, but also the powerful. Everbodies basic rights are protected, even against the government.
Sure, we pay taxes, and cooperate by compromise in countless ways. However, that's not what we are talking about here, at all!
There is simply no way a government can lawfully kill a citizen to help some others, at least not in the EU, whatever the net gain may. That is just one obvious example of how the argument of the net gain is simply overruled by modern principles of basic human rights.
And I picked the example of beating someone up not totally at random, people went to court against the MI5 and MI6 because of their involvement with deportation of British citizens to Guantanamo [1] which may or may not turn out to be a worse fate than getting beaten up in a dark alley.
And last but not least, the licence to kill [2] seems to be an actual thing.
[1] http://humanrights.ucdavis.edu/projects/the-guantanamo-testi...
Doesn't necessarily make a society good (aka righteous).