If we go in the anatomy of racial discrimination, we would find some interesting things. History is witness that since the dawn of different human establishments at different places in the world there was an urge in the minds of a few to expand their kingdom by simply attacking and invading others. The interesting thing is others were either belonging to same community or tribe or different but that did not matter much at that time as the main objective was to expand and increase one's territory. With time these evolved as great empires of their own kind and had a majority of the people of a particular tribe or sect who in fact forced the minorities to be like them or leave the country. This happened worldwide geographically and became a yardstick in many ways to determine as who would live in this area and who is to be exiled immediately. With this background let us come to the modern times. Politicians and great leaders knew all these basic things well and used them to their advantage by making an army of gullible and followers to fight for what they pronounced as our land and our culture coloured with their religion of course. That gave people to misbehave with each other simply because you do not belong to my race. It is stupid and ridiculous to think like that but in real life situation it is happening today in many parts of the world. Some countries like China solved this problem by abolishing all religions and telling the people that you are only Chinese and to some extent they are successful to bring the issue of racial discrimination to minimum but think if a non-Chinese try to grab power in China, would they allow him to do so? So, racial discrimination is the front for capturing power and prosperity in one's hand rather than the hands of other tribes, communities, groups etc. So, in that situation how to stop the racial discrimination is definitely a big challenge.
Knowledge is power.