The city needs a "Marshall Plan" to curb soaring gang violence by reducing inner-city poverty and the lure of thug life, a consulting group said Friday. Two decades of piecemeal efforts in the nation's "gang capital of the world" have failed and it is time for the city to bring together prevention, intervention and community redevelopment programs under a single umbrella, according to a final report issued by Advancement Project Los Angeles. The city has an estimated 40,000 members in 700 gangs. Nearly three-fourths of all youth gang-related killings in California have occurred in Los Angeles County and the city...