THe aim, says Erik Nord, head of a team of detectives in Gothenburg, Sweden’s second-largest city, is “to get a grip on the situation”. Police are certainly getting a grip on something. In the week after November 8th, when a law came into force allowing them to detain people flaunting ostentatious luxury goods, the Gothenburg polisen made 30 arrests. One woman arrived at the airport wearing a Rolex watch and carrying 1.5m kronor ($137,000) in cash. She picked a bad week.