They used helicopters and marched people through the building and outside some of them in restraints. They were "tren de aragua" members said ICE. All of them gang members. The videos have been used for commercials for ICE recruitment.
37 were arrested, only 2 were actually accused of being gang members. One of those two has no criminal record, the other only minor offenses. In court ZERO of the 37 were accused of being in gangs. The 2 who had been before were asked to self deport and told if they did, they could then reapply to return to the country.
So the entire thing was staged for them to make a commercial, they never had any intel that said there were gang members inside. Just undocumented people they could have detained without force.