Newly sworn-in Los Angeles County District Attorney George Gascón took the helm of the nation's largest prosecution office Monday and unveiled an ambitious agenda that includes the end of cash bail for many offenses, not seeking the death penalty and the refusal to pursue charges for certain crimes. Gascón, a former San Francisco district attorney and assistant Los Angeles police chief, took over for outgoing District Attorney Jackie Lacey after she lost her re-election bid last month amid