What are five totally distinct, creative ways to describe the usefulness of the police?

1. The police serve as a "watchful guardian" to keep us safe.
2. The police are a "protector of the law" who protects us from harm.
3. The police are an "impartial enforcer" of the law.
4. The police are an "intermediary of justice" who helps us get justice.
5. The police are a "counselor of the law" who helps us understand the law.