Calling this one person's deportation to El Salvador a mistake implicitly suggests that all of the other people deported to El Salvador concentration camps were both on purpose, justified, and of course good actually.

This will be used when citizens will begin to be deported as well. The idea of a specific person sent there unjustly, implying that everyone else sent there is fine and they deserve it.

This is ignoring that Garcia wasn't sent there mistakenly anyway. It's all on purpose, or at best, neutral - if he was identified by the algorithm, then he deserved it. (Maybe that's the scariest outcome, actually).