I remember in the handout that Mr. Bennet had given out in class for The Asphalt Jungle, that Emmerich had said that "Crime is a left handed form of human endeavor". I was really fascinated by the idea that his statement made.
In Egypt, the law states that one may not eat with his left hand; because though on the outside, it may be clean, it is used for vile purposes, in particular cleaning after yourself after you take a dump. The left hand is seen as the weaker counterpart to the right hand. Even those who are left handed are sometimes looked down upon.
The word endeavor means to make a "strenuous effort".
Therefore Emmerich gave the best possible definition of crime. Though criminals work hard very at it, so that in the end, they may make some profit or gain a reward, it is looked down upon by society, much like the left hand. I guess those who don't commit crimes and work hard at their socially acceptable jobs are committing right handed endeavors then.