This is a great and important subject, but I think you could view indoctrination not as an exception but as a rule in everyday life and throughout our lives.
The mind is subject to indoctrination in any relaxed, i.e. hypnotic state, emotional state, or young, immature stage of life before the mind is fully formed and especially at an early age mainly before the age of 5.
An individual in any of these states: relaxed, emotional, or immature is open to indoctrination. The very young--before age 5 or so are easily indoctrinated by inculcation into religious and political beliefs to the point of seeming axiomatic later in life.
Television has perfected the art of indoctrination for profit. Melodramatic fiction programs arouse the viewer into an emotional state and then cut to a commercial at that exact moment. The message and product name are repeated over and over to implant the message into the viewer, and it works, superbly. Companies spend millions for the most emotionally-packed--not quality--shows. Another example is football, the only sport still shown on broadcast free television. The cut to commercial occurs after a touchdown, field goal, injury, or other emotionally-packed moment. And Budweiser or Miller sells, boy does it! Is it because the beer is better?
Hypnosis itself is nothing more than a relaxed state of mind, subject to indoctrination but in its positive side. Subjects can reverse indoctrination and bad habits by a controlled re-indoctrination, an agreed upon inculcation or repeat of the formulated message while in a relaxed state of mind. Another type of therapy is redecision therapy whereby the patient with the help of the therapist reformulates a decision to counter a bad decision made earlier in life. When the patient in the course of therapy gets into a high emotional state, e.g., deep crying, the therapist has the patient repeat the reformulation over and over. And it works, very well.