What’s wrong with racism? Is preferential affirmative action for the black people now morally justified?

Racism is a moral mistake that almost can found everywhere. The most well known situation should be the combat among black and white in United States, which has last for over 40 years. In the following passage, I will discuss why racism is morally wrong and the how the preferential affirmative for the black people now is morally justified. First of all, let me first define what is racism. Racism is a belief that all members of each race possess characteristics, abilities, or qualities specific to that race, especially so as to distinguish it as inferior or superior to another race or races. That means certain groups such as black people and Indian, were being treated discriminatingly and consider as “inferior” because of their skin colour, and they may be denied for admission of school or application of a job because of this, which is definitely has no relative relationship to their ability towards the job or the level of their knowledge. So, why racism is consider as morally wrong? Since people were discriminated by race, others do not consider their ability by their relevance of a talent or characteristic or skill to the place of a job or admitting to a college. This totally not a fair to just a person’s ability by their race, because the race of a person is biological factor and can not be chosen. For example, not to admit a black student with good result but admit a white student with fair result is unjust, because we should consider admitting the student or not based on their academic result but not their skin colour. We should consider people deserve the place or not based on the relative skills or talent and skin colour is definitely irrelevant in most of the situation. Besides, some of the people were under justified by the general characteristics of their race group but not individual achievement. Let me give a simple metaphor, men are usually stronger than women, but some women are strong then men. Therefore, we can not define all men are strong then