Mich. Comp. Laws § 35.833

Sec. 3. A person who willfully takes down, destroys, defaces, or carries away or possesses a flag holder or other design or memorial flag placed at a grave for memorial purposes without authority from the owner of the cemetery or the person causing the flag holder or other design or memorial flag to be placed in the cemetery or at the grave is guilty of a misdemeanor punishable by imprisonment for not more than 90 days or a fine of not less than $5.00 or more than $500.00, or both.