El Salvador’s Cecot Mega Prison is one of the most feared jails in the world. Built to hold the country’s most dangerous criminals, it now cages thousands of members from the rival gangs MS-13 and Barrio 18. In this video, we explore the brutal reality of life inside Cecot Prison – the extreme security, the gang rivalry, the tattoos that tell their story, and how El Salvador is trying to end decades of violence....