Emphasis on 'potentially'. Don't waste too much time on them, some of them get off on watching you uselessly spend your time and energy and sanity on them. Brainwashing doesn't work like it does in comic books. These are people who were already willing to and capable of rationalizing putting kids into cages and the 'brainwashing' just gave them an easy explanation.

It's like a person who has committed rape. Even if they come out later as an anti-rape activist and they're publicly remorseful and they do a lot of work to make up for the harm they caused you still aren't gonna leave them alone with your sister.