"As of 2013, 24 states had stop-and-identify laws. Regardless of your state’s law, keep in mind that police can never compel you to identify yourself without reasonable suspicion to believe you’re involved in illegal activity.
But how can you tell if an officer asking you to identify yourself has reasonable suspicion? Remember, police need reasonable suspicion to detain you. So one way to tell if they have reasonable suspicion is to determine if you’re free to go. You can do this by saying “Excuse me officer. Are you detaining me, or am I free to go?” If the officer says you’re free to go, leave immediately and don’t answer any more questions.
If you’re detained, you’ll have to decide if withholding your identity is worth the possibility of arrest or a prolonged detention. In cases of mistaken identity, revealing who you are might help to resolve the situation quickly. On the other hand, if you’re on parole in California, for example, revealing your identity could lead to a legal search. Knowing your state’s laws can help you make the best choice.
Remember that the officer’s decision to detain you will not always hold up in court. Reasonable suspicion is a vague legal standard, and police often make mistakes. So if you’re searched or arrested following an officer’s ID request, you may contact an attorney to discuss the incident and explore your legal options."
So basically the cops have the right to bring this guy to the station for declining to show his ID, in Minnesota. The courts can sort it out... Correct?