Heroes of the Street (1922)

When a smart-aleck street kid's police officer father is killed in the line of duty, the boy turns over a new leaf and goes to work to support his mother, brothers, and sisters. He gets a job as an usher in a theater, but really wants to become a police officer to avenge his father's death. He soon finds himself involved in a fake kidnapping, real gangsters, and a tip on the identity of the man who killed his dad.