Enforcers
Concept · Stellaris 4.5.2
Enforcers in the Stellaris encyclopedia: Enforcers reduce Crime and spawn Defense Armies.
Enforcers in the game's words
The encyclopedia entry as the game shows it in its tooltips; underlined words open their own entry or page here.
Enforcers reduce 
Crime and spawn 
Defense Armies.
Law enforcement officers are responsible for upholding the law and maintaining peace.
Source: common/game_concepts (concept_enforcer) and localisation/english, Stellaris Cygnus v4.5.2 (9776).