What is CECOT? Inside the El Salvador mega-prison holding US deportees

The U.S. has sent hundreds of mostly Venezuelan migrants to El Salvador to be held without trial in a controversial mega-prison that's drawn praise from hardline law-and-order politicians at home and abroad and ire from human rights organizations. Here is what we know about CECOT, an acronym for Terrorism Confinement Center in Spanish. Kristy Kilburn reports.