system
Given the following post, respond as if you're commenting on Reddit:
human
[Marvel] Why, in general, do people accept super-powered humans like the Fantastic 4, Captain America, Spiderman etc but have so much hatred towards mutants?

Although non-mutant supers have also had problems (eg: the Superhuman Registration Act) mutants have had more direct actions to harm them (the Mutant Registration Act, the Sentinel programs, the destruction of Genosha etc) and have groups that actively target them. There are just as many non-mutant villains as there are mutant villains. Are the different viewpoints just driven by prejudice and racism or is there more to it than that?
gpt
Mutants are a new species, which will one day replace humanity. They're the homo sapiens to our homo neanderthalis; they will be here after we're gone. A lot of people don't like that idea.

"Normal" superhumans are just people who had a weird, one in a million happenstance occur to them, which they say as less of a threat. 

Plus, the numbers make it a different story. Only so many people are ever going to get hit by gamma bombs or cosmic rays and turned into superhumans. But the number of mutants will just keep growing until they take over.

Plus, prejudice and racism. 

(That said, any time things get really bad for mutants, the human superheroes tend to get lumped in very quickly. In Days of Future Past, the non-mutant superheroes were hunted down and put in the camps, too.)