Keep The Peace
Defined in 2 dictionaries — Cyclopedic (1922), Ballentine's (1916)
The Cyclopedic Law Dictionary
Walter A. Shumaker and George Foster Longsdorf; ed. James C. Cahill · 1922
To refrain from any breach of the peace {q. v.).
Ballentine's Law Dictionary
James A. Ballentine · 1916
To maintain public order and decorum; to prevent breach of the peace; to refrain from violence.