"Wisconsin ... laws allow citizens to make arrests under one of two conditions.

The first is when a citizen has probable cause to believe that the person they are arresting has committed a felony. An example would be if you are standing outside a bank and someone with a mask comes out of the building with a bag of money. That gives you enough reason to believe that the person committed a felony.

The second is when someone witnesses a misdemeanor and the misdemeanor is a breach of the peace. That means you can’t arrest someone for public intoxication alone, but you can arrest someone for public intoxication if they’re throwing punches or objects at people."

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