Minn. Stat. § 617.299
Subd. 1. Misdemeanor.
Subject to the exemptions of section 617.295, a person who exhibits an obscene motion picture at a drive-in theatre is guilty of a misdemeanor.
Subd. 2. Penalty enhancement.
Whoever violates the provisions of subdivision 1 within two years of a previous conviction shall be sentenced to imprisonment for not less than 20 days nor more than 364 days and to payment of a fine of not more than $3,000.