Gangs: the origin of hate

<p>It is estimated that the Mara Salvatrucha, or MS-13, and its rival Barrio 18 gang together have about 40,000 members in the United States. And at least another 100,000 in El Salvador, Honduras, Guatemala, Mexico and Italy. How did the gangs come to be among the world's best known criminal organizations?</p> <div><span style="color: #030303; font-family: Roboto, Arial, sans-serif; font-size: 14px; white-space: pre-wrap; background-color: #f9f9f9;"><br /></span></div>

El Faro / Univisión