Answer: Utilitarianism
Step-by-step explanation:
Utilitarianism could be described as a theory of morality where an action is advocated to yield happiness against an action which would cause unhappiness or danger. It is considering the greater good despite trampling on some few bad who are against this goodness.
The actions of the Sheriff is viewed as an Utilitarianism, where he tracks down illicit drug dealers for the safety of the society at large.