LOS ANGELES - The residents of a South Los Angeles house are characterized by authorities as a gang and narcotics stronghold. The three men who live in the home on Bahama Ave. have been served with an abatement action, prosecutors announced. Along with the three men, 20 others were also named in the civil lawsuit, which alleges they are allowing sales of rock cocaine and marijuana by members of the Campanella Park Piru gang, according to the District Attorney's Office.