...Chief of Detectives Robert Colangelo, who said the attacks appeared unrelated to money, race, drugs, or alcohol, said that some of the 20 youths brought in for questioning has told investigators that the crime spree was the product of a pastime called "wilding".

"It's not a term that we in the police had heard before," the chief said, noting that the police were unaware of any similar incident in the park recently. "They just said, 'We were going wilding.' In my mind at this point, it implies that they were going to raise hell."...