New Kid on The Block Donnie Wahlberg arrives at his St. Charles Wahlburger's restaurant to find a flash mob dancing to the group’s latest single. Courtesy of Julia Rodriguez.

Area residents dressed in festive costumes gather on Maplewood Road to perform for trick-or-treaters as the crowd watches during a Halloween flash mob Thursday, Oct. 31, 2024, in Riegelsville.

Aug. 27, 2011 -- When a massive flash mob rampaged outside the Wisconsin State Fair injuring 11 fairgoers on Aug. 4, old-fashioned police work quickly led to the arrests of 31 people.