Mich. Comp. Laws § 750.385

Sec. 385. Destroying and injuring signs, bills and notices placed on private property—Any person who shall wilfully tear down, destroy or in any manner deface any signs, bill or notices on any private lands of this state, or on any lots or premises in any township, city or village shall be guilty of a misdemeanor: Provided, That such signs, bill or notices are not in violation of any general law of the state or municipal ordinance, and were placed by the owner or lessee or by their consent.