MS-13: just another threat

Michelle Malkin makes a big deal about Mara Salvatrucha (MS-13) as a problem of illegal immigration but I've been largely ignoring it since I thought that they were just another gang. After watching tonight's Nightline program, I've changed my mind: they are not your "low IQ gang" but well organized paramilitary group. They not only have a large, multi-national network of members, but also have intelligence operations: counter surveillance on police surveillance.

So they are better prepared than your typical police. But then FBI and the military are probably better prepared than most police dept. The question is how can people organize to counter any and all such threats, "enemies foreign and domestic," illegal or otherwise?