Studying guns and bullets to learn which gun was used in a crime.

When criminals see graffiti and other signs of crime in a neighborhood, they commit more crimes

The neighbors and police work together to control crime

a person or group participating in illegal/immoral activity

The whole country, all of the United States

The injury from the criminal act

Investigating the police

authority and responsibility in a specific area or place

Under 18 years old

knowing that your behavior may produce an injury and doing it anyway

You should have known that your action could hurt someone

Enough evidence to convince a normal person that someone committed a crime or evidence needs to be collected from a specific place.

Mostly using police cars to control crime

a written law