Racism is a very complicated definition.For me it's about the huge number of weak features which are the images of a miserable personality. Actually,we have heard about racial preconceptions in the XVI—XVII centures. Then a french historian Joseph de Gobino investigated this "question' and he signed it more precisely-he called it "scientific racism".Basically his thesis specifically dealt with Nordic race but nevertheless the question was socially opened.Indians, blacks, Jews, all of them one way or another have been harassed and subjected to contradictory actions of the "tops". That came historically,often due to differences between religions and antropological features. Racism was a very convinient process.To my opinion,that reflects the most disgusting qualities of a human being. Fortunately nowadays step by step this problem is going to zero, but at the same time we can't be sure that , for example,the phenomenon of the Third Reich will not repeat.
What are the reasons of these preconceptions? Silly as always:unwarranted sense of superiority, vanity, self-centeredness, eventually -psychological obsession with something particular. Very usual, you see. But for me this "fascinating set of a human treasures' is the biggest weapon. Dull, not intelligent weapon.Often people try to create themseves an affirmation with the help of a racism.They consider wrongly that it will help them to solve economical and political problems, but history shows us the reverse side and statistics.
That's too easy way to achieve something great, this will never become someting noble. Getting a feeling of being domineering is inherently a sick feeling.
Humans have created a huge dump of the racial theories but they had not realize how to exist in peace with the rest of people who only differ one from another by skin ,color, eye shape, some private habbits .That's an obscurity for me. That's too simply , too baldly for mental resources of a person. But unfortunately that's the only truth and explanation.