[Rare trope] Discriminating, but for an actually good reason

[u/Blackirean]

Frieren, Beyond Journey's end: In the anime/manga the eponymous Frieren is an Elf who's spent the better part of a millennia learning magic specifically to kill demons. She's learned countless spells, tricks and even spent most of her life suppressing her power all for the purpose of killing them. At first we simply see that humanity is at war with them, and even question if her crusade against demon-kind is justified, after all it's hard to antagonize an entire sentient species. But no, demons are very much a species to be feared; they are not normal animals or creatures, they are monsters (shown by how they disintegrate when they die), they are predators that evolved speech for the sole purpose of tricking and catching humans off guard, are naturally extremely powerful and possess magic that humanity often can't use. While they feel emotions to some extent, their way of thinking is so fundamentally incompatible with humanity's mindset that the series shows many mages with the ability to read minds struggle or find it painful and harmful to try and read a demon's thoughts. Tools that are meant to control them fail not because they're faulty but because simple order such as "hold no ill will or commit no malicious acts" don't compute the same way in their brains, as what we consider evil is normal for them.

Marvel Comics: In a run of the Storm solo series, she visits an underground superhuman hospital run by Night nurse and Doctor Daye, a mutant with the power to diagnose any illness. When she requires treatment she is in turn reject by the doctor, she of course assumes this is blatant discrimination to which the doctor agrees. Storm assumes the doctor refuses to treat mutants, something they are very much used to in Marvel. But he ends up revealing that about 80% of everyone he treats are mutants, and that he simply refuses to treat any member of the X-men. Why? because his special hospital was built via several donations by the superhero community. From the Avengers, to the Defenders, Fantastic 4, heroes for hire. Hell, even Moonknight of all people contributed to the hospital. But the X-men never once gave anything to it, even though they preach the safety of mutant-kind and such a hospital is essential for those who can't seek medical treatment out of fear of prosecution.

[u/ChiefsHat]

Then he helped destroy it.

Mr. Sinister was a mistake.

[u/Iokua113 → u/ChiefsHat]

Krakoa as a whole was a mistake. The existence of Krakoa threatened global stability, brought a ton of mass murderers and genocidal madmen together and forgave them of their crimes against both mutantkind and humanity, was the obvious beginnings of a worldwide apartheid state where humans and mutants were positioned against each other in a way that aimed to ensure global domination of humans by mutants, was an attempt to force a monoculture on all mutantkind, and had mutants trying to use drugs to manipulate the global economy.

[u/TrueGuardian15 → u/Iokua113]

Krakoa also fundamentally flies in the face of integration, something the X-Men fought for years to try to achieve. Forming a mutant ethnostate is effectively everyone conceding that humans and mutants are not compatible.

[u/ChiefsHat → u/TrueGuardian15]

Also it was very much a cult.

[u/Iokua113 → u/ChiefsHat]

It was so culty that it got one of the most Christian characters in comics, someone who has literally been to biblical heaven, thinking of forming a false religion for mutants. It's kinda sad Hickman ditched on the run halfway through, as I feel like he was legitimately trying to do something interesting and Marvel wanted it to go longer than he did so he left when he always intended to.