German Chancellor Angela Merkel sharply condemned as “abhorrent” a rampage in Stuttgart where hundreds of partygoers brutally attacked police officers, her spokesman said Monday, as concerns grow that law enforcers are increasingly treated with contempt. Hundreds of people unleashed a riot of an “unprecedented scale” in the early hours of Sunday in the city centre of Stuttgart, attacking police and plundering stores after smashing shop windows. Tensions had built up shortly after midnight when officers carried out checks on a 17-year-old German male suspected of using drugs, Stuttgart deputy police chief Thomas Berger said.