Only you can give permission to someone to control your mind. You do this willingly and freely. Even when threatened with force you still make the final decision.
The mechanics of your submission to a Master like this are that someone tells you what to believe. And you go on to believe it. You still don't know if it is truth. You just agree to believe it. Often contrary to what you already know.
That was your choice in totality.
No one else or no power in this universe, that we know of, can change your mind against your will. You are the only one who can do it.
Your choices are entirely a matter for you to attend to. They belong to you and only you. Your choices may coincide with identical choices of others. But that is random coincidence, as far as anyone knows.
The phrase 'controlling your mind' is a bad way to think about it though. It's a common myth. You are the sole controller. And you can prove it without doubt scientifically and emotionally. If someone has changed your mind that's a figure of speech - you changed it because you chose to believe in what they want you to believe. You still did it.
You can lie about what you choose to believe and the lie was still your choice.
Even God cannot change your mind for you. If he could that would break his oath of freedom with you and the universe and he would lose all credibility.
My hypothesis - if he even exists, is that God does not want your obedience contrary to all religious power structures. It's obvious why Power wants you to believe in this right?
He wants your autonomy, not your obedience. He wants you to choose from your own self from what you know. Belief to him is irrelevant. He wants you to know. If you move against him on this, then so be it, but then you're on your own in the universe. (I presume)