Why do people respond so negatively to ridiculous questions?

I just want to know why people become upset when someone is obviously being a moron...Who cares if an obese, repulsive, and probably illiterate person doesn't like a certain race? I just think that you shouldn't read questions that are meant to elicit a negative reaction...What do you expect to find when you click on a question like "Why do all black people have such big lips?" Obviously the person is trying to perpetuate a RIDICULOUS stereotype and stir up trouble...IGNORE TROLLS...