Law enforcement faces a challenge as more officers resign or retire, and fewer qualified applicants are interested in becoming police officers. A new report from the Justice Department suggests that police agencies should reevaluate their mission, values, culture, and employees to improve their service to communities.

In the report titled "Recruitment and Retention for Modern Law Enforcement Agency," DOJ officials concluded that the law enforcement profession needs to update its hiring and retention practices.

Officials say that law enforcement agencies can enhance the appeal of policing as a...