They know how to wield a gun, intimidate and take care of their own, all with an air of professionalism (to varying degree). We speak of course of the stars and supporting cast of gangster movies; the organized crime families and the men of law who pursue them.
Killing fellow criminals is one thing, but for those entrepreneurial souls ready to build an empire in society's margins - and defend it at all costs - their struggle for greatness and eventual fall is the stuff moviegoers yearn for.
How will the star-studded cast of this week's Gangster Squad stack up against the films that came before? We thought we'd look back to see just how far the bar has been raised on gangster movies over the years.
The genre is a massive one, but here's our list of the 10 Best Gangster Movies - In no particular order.