Mara Salvatrucha aka MS 13, one of the largest gangs in North and Central America and yesterday, 103 of its members were arrested by federal immigration officials. Triggered by fears that MS 13 may ally itself with al Qaeda in smuggling people in the US, Operation Community Shield was started. Over the past three weeks the arrests were made in Washington, Virginia, Baltimore, New York, Miami, Los Angeles and Newark, N.J. A third of the......