No one wants to be made obsolete or inferior. Normal humans would fear that on a separate level to being scared of someone because they are more powerful than us. Thor? He doesn't make me feel less of a human because he isn't one. Ghost Rider? Nah he's got a demon in him. Spiderman? Just a kid bitten by a radioactive spider. Still hate him though, did you read about he did the other day!?!?!?!
On a completely different level, I'd also say (some) people might react to mutants the same way (some) react to hearing a person has Aids. Exactly the same person as before, but there's something terrifyingly 'wrong' with them now.
On a completely different level, I'd also say (some) people might react to mutants the same way (some) react to hearing a person has Aids. Exactly the same person as before, but there's something terrifyingly 'wrong' with them now.