For generations of children in Ipswich, a sleepy English market town, Rosie the Indian rhinoceros has been the star attraction at the local museum.  But that changed in July, says Councilor Bryony Rudkin, when gang of thieves broke into the museum and stole Rosie’s horn.  “We have other valuable items, but they knew exactly what they wanted and did not take anything else. It was very targeted," she says. "All we know is a market exists for this horn. It seems some people ...