In Los Angeles, for the first time in 12 years, violent crime increased in 2014. Aggravated assaults were up 24%. LAPD Chief Charlie Beck says better record keeping could be part of the reason. The Department uses the Compstat system introduced by former Chief Bill Bratton — and the LA Times recently discovered that the number of serious violent crimes had been under-reported. Is the city more dangerous…or is there a math problem?