A lot can go wrong when you open carry what seems to be a MP-5. Yes, people are going to call the police. Yes, the police will approach you. You can start spouting your Second Amendment rights and local codes but the officer has an obligation to see if you are a threat.
Watch what happens when the police respond to these open carriers. This cop handles the situation with complete professionalism and class and it seems the carriers are even surprised at the outcome. Good job Officer Mike North of Klamath Falls, Oregon.