Unchecked megacorps, lawlessness, cyberpsychos, people chopped alive for parts, corrupted police and officials are bad, sure, but this. This is the worst thing I’ve seen in this game.

This is part of the "Talent Academy" gig in the Phantom Liberty DLC.
This is in a club where young athlete talents can be "acquired." Since this is in Dogtown, no one cares if the kids have received illegal implants.
In other words, they sell illegally chromed-up kids at auction like cattle.