Wis. Admin. Code State Fair Park Board SFP 2.11
No person may loiter or prowl in the park. Violation of this rule is defined as presence in the park, at a time, or in a manner not usual for law abiding individuals under circumstances that warrant alarm for the safety of persons or property in the vicinity. Among the circumstances which may be considered in determining whether alarm is warranted is the fact that the actor takes flight upon appearance of a peace officer, refuses to identify himself or herself, or manifestly endeavors to conceal himself or any object. Unless flight by the actor or other circumstances makes it impractical, a peace officer shall prior to any extended detainment afford the actor an opportunity to dispel any alarm which would otherwise be warranted, by requesting him to identify himself or herself and explain his presence and conduct.
Wis. Admin. Code State Fair Park Board SFP 2.11