The Null Device
Paul Schaefer was a Nazi officer during World War 2; after the war, he fled to Chile, where he established a religious cult named "Colonia Dignidad". Surrounded by barbed wire and guard towers with searchlights, inside it resembled one of those German pastoral scenes the Nazis were so fond of, where the men wore lederhosen and the women wore their hair in pigtails, except for the bit about young boys receiving electric shocks to their genitals to condition them against sexual desires, and secret tunnels under the compound where Schaefer's friend, Chilean dictator Augusto Pinochet, had dissidents tortured to the strains of Wagner. Schaefer, who fled to Argentina in 1997, is now facing trial for sexually abusing young boys. (thanks to Conrad for bringing this to my attention)
As the baby boomers reach old age, the latest threat to public order is "Hell's Grannies", raising mayhem on their motorised wheelchairs.