Mich. Comp. Laws § 324.1608
A person who knowingly or willfully obstructs, resists, or opposes the department, an officer appointed by the department, or any other peace officer in the performance of the duties and execution of the powers prescribed in this part or in any statute or law, in making an arrest or search as provided in this part, or in serving or attempting to serve or execute any process or warrant issued by lawful authority, or who obstructs, resists, opposes, assaults, beats, or wounds the department, any officer appointed by the department, or any other peace officer while the department or officer is lawfully making an arrest or search, lawfully serving or attempting to serve or execute any such process or warrant, or lawfully executing or attempting to execute or lawfully performing or attempting to perform any of the powers and duties provided for in the statutes or laws described in section 1601, is guilty of a misdemeanor, punishable as provided in section 479 of the Michigan penal code, Act No. 328 of the Public Acts of 1931, being section 750.479 of the Michigan Compiled Laws. In making an arrest or search as provided in this part, or in serving or attempting to serve or execute any process or warrant, the department, any officer appointed by the department, or any other peace officer shall identify himself or herself by uniform, badge, insignia, or official credentials.
MCL 324.1608