Cleveland agreed to overhaul its police department under the supervision of a federal monitor in a settlement announced Tuesday with the U.S. Department of Justice over a pattern of excessive force by officers.

The streets were calm Sunday after police arrested dozens of demonstrators when protests grew increasingly aggressive in the wake of a patrolman's acquittal in the deaths of two unarmed black suspects.

A white Cleveland patrolman who fired down through the windshield of a suspect's car at the end of a 137-shot barrage that left the two unarmed black occupants dead was acquitted Saturday of criminal charges.