"We're persevering day by day" says Jose Hurquilla Bonilla, one of more than 12,000 inmates held in El Salvador's CECOT mega-prison, which has now been in operation for six months. The facility, said to have a capacity of 40,000, is considered the largest in the Americas and was built on the orders of President Nayib Bukele to hold some of the 70,000 suspected gang members arrested during his war on gang violence.