system
Given the following post, respond as if you're commenting on Reddit:
human
[Marvel] Why hasn't anybody tried to telepathically alter/reality warp the minds of *anti-mutant individuals to be more accepting?

*Not just anti-mutant but also including anti-inhuman, xenophobic etc.

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I understand how such power can get to one's own head -- the main reason why Xavier wouldn't do such a thing -- but surely slight, subtle alterations should be fine. In fact, it would make the process of acceptance easier and not repeat the perpetual cycle that inflicts mutants, inhumans etc. 

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Citizens in the Marvel Universe are generally portrayed as horrible people, unlikely to change their ways for the better, so the use of telepathy and/or reality-warping (combined with proper education) would be beneficial in the long-run.
gpt
Because it's a massive invasion or privacy and subverting free will.  That kind of mental invasion would viewed as monstrous.  Education is a good thing, but using your powers to force somebody to think your way is straight evil, even if you disagree with them.  

The villains tend to have an ego.  Sure they could rule over a slave population that they've brainwashed, but the real victory is making your enemy recognize that you're superior, of their own free will.  Magneto doesn't want to *make* them think he's better, he wants them to *acknowledge* that he's superior.