Wis. Stat. § 192.17

If it shall become necessary for the protection of the passengers on any railroad car from the violent, abusive, profane or indecent language or conduct of any passenger, the conductor 2192.17 RAILROADS; REGULATIONS AND LIABILITIES may arrest such passenger and keep the passenger in the baggage car or some other safe and secure place on such train until its arrival at some usual stopping place, when the passenger may be put off the train and given into the custody of some officer for prosecution; and for this purpose conductors, while in charge of trains, may exercise the powers of sheriffs.