I don't think it's fair to make the assumption that all (or even most) white people consider black people to be less human than they are. There are, of course, groups of radical white supremacists, but they are the exception, I believe.
being a famous singer or a person that know how to do really cool sports
Perhaps you should consider that it is really rude to talk to people whom you annoy.
It is called being "stuck-up"
it does really affect a person
People harass others because they are ignorant of the other person. They dont understand that person and it frightens them. There is really nothing wrong with you. Be proud of who you are and remember that there are people who think good of you (even if they dont know you).
a person who considers that the goods or service being offered is suitable to his wants.
It's not always dangerous. If you are being a good person to a very dangerous person who doesn't consider it then...
People being a certain number really depends on what you are talking. A number representing a person can be used as identification, employee number, or many other things.
being sensitive means you are more emotional than most people and bipolar is when you pretty much have really bad random mood swings.
Yes, It is scientifically proven that people consider being messy can help people be orginized than being tidy.
to care for other people and put others first
Being a people-person basically means you're good with people. You're not afraid to start a discussion and people like being around you.