People who have been programmed, if they are aware of it, often feel that they cannot get out. They may have alters trained to act against them, harm them if they speak out, report them to their abusers. Likely they will feel the same amount of fear towards their abuser as when they were a child. They feel powerless against a seemingly all powerful abuser, who controls even their own mind and willpower. The alters or people who have been programmed are simply reacting to a very deep lie they believe as truth. It takes time and patience, but programming is completely reversible. The lie must be exposed as a lie. When the alter or person does not believe it, they will not act on it. Abusers and programmers use extreme fear to keep their victim from questioning the truth and realizing their own autonomy. In the end, it is all illusion.
Most abusers are certainly very dangerous to a child, and some still dangerous to an adult. However all pooled together taking into account their brain, brawn, and overall impact on the world, I don't see them as much bigger than a mouse casting very large shadows on a wall. They are not strong people, or brave people, and nothing they do is built to truly last, including programming.