Police have learned that 17 gangs have honed in on the wealthiest residents of the Los Angeles area by robbing them after they leave venues catering to the rich and famous. Police said the robberies are often carried out by crews working from multiple vehicles and that the high-end handbags, watches and other items are then sold regionally on a thriving black market, according to the Los Angeles Times. Violence towards victims is becoming a hallmark of the crimes, said Capt. Jonathan Tippet, who leads a Los Angeles Police Department task force formed as the number of high-end violent robberies...