The human species is classified as being ethnocentric. We believe ourselves to be perfect and judge others by our beliefs and our ideals of what perfect is. It is a human instinct to resist change and furthermore, accept those who are different. We seek and find trust in the company of people who are similar to ourselves. Since the beginning of time, diversity has been struggling for peace between the human species.
History is a prime example of the struggle of diversity.
We have been cutting each other down for our differences, whether it be in politics, work areas, religious beliefs, or to overpower each other. Personally, I believe that how we treat each other is wrong. I believe that people should be promoted or rewarded on how well they do things. It shouldn't be on how well you like someone or how similar their beliefs are to yours. It's not fair to those who do the work and receive no credit at all just because the boss likes someone else better.