SAN FRANCISCO -- San Francisco's biggest gang trial in many years ended today when a jury convicted six men of racketeering and conspiracy as members of MS-13, a crime organization that waged war against rivals and defectors in San Francisco's Mission District and was found responsible for at least three 2008 murders. A seventh defendant, Walter Cruz-Zavala, was acquitted. The six men face up to life in prison when sentenced Nov. 30. Jurors deliberated for a week after a federal court trial that lasted more than four months. Prosecutors portrayed the young men as leaders or soldiers of a heavily...