The characters inhabit a world that's corrupt and dangerous. Money buys power and privilege, and those who enforce the law aren't always ethical. "Good" and "bad" are relative.
Characters use guns and other weapons, and there are realistic shootings, stabbings, and other forms of assault against both adults and children. Crimes are bloody but not excessively so. Some cases involve sex crimes, with at least one involving the rape of a child.
Simulated sex with partial nudity (bare buttocks, the side of a breast, etc.). Many characters participate in prostitution, either as customers or solicitors.
Light use of coarse terms like "d--k."
Drinking, Drugs & Smoking
Characters drink socially (often to excess) and smoke onscreen.