[image deleted] Besides... to carry a concealed weapon in Minnesota you have to also carry your ID. He had no ID on him. So he was in violation...
And,
(Minnesota Statutes § 609.71):
If three or more people are assembled and disturb the public peace by intentional acts or threats of unlawful force or violence, that constitutes a riot.
If a participant is armed with a dangerous weapon or knows another participant is armed, they can be charged with second-degree riot, punishable by up to 5 years imprisonment.