No person present at any public dance shall engage in any disorderly conduct, as defined by M.S. § 609.72, as it may be amended from time to time, and any disorderly person shall be immediately removed from the dance by an on duty police officer.  Should a substantial number of persons at the public dance engage in disorderly conduct, an on duty police officer shall terminate the dance and remove all persons from the public dancing place.
Penalty, see § 117.99