What are the causes of racial discrimination in the United States?

It should be said that the arrival of every foreign ethnic group will cause different degrees of exclusion and discrimination among local ethnic groups. Jews are a good example. Since the evil slave trade began, slaves have been introduced to the United States in large numbers. The introduction of black people existed as a tool to meet the large labor demand of plantation agriculture in the south, and was not given the same meaning and rights. So it is impossible to be treated equally by local whites. For local whites, blacks are just ordinary tools of production, no different from their cattle and horses. It is an insult to treat them as American citizens like themselves. Black people are also full of discrimination, negro. After the Civil War, blacks were liberated from slavery plantations and gained personal freedom. The liberation of black people conforms to the development trend of capitalism, but not the personal dignity of black people has been completely affirmed. The concept of racial discrimination can be said to be deeply rooted, and it is difficult for the situation of blacks to be completely improved in a short time. Because of the low status, low living standards, less education, it is difficult for blacks to gain a foothold in society, and the crime rate is higher, which in turn leads to more discrimination and hatred against whites, which can be said to have formed a vicious circle. Black people became exiles in their own land. Of course, the situation of blacks is also improving, and I believe that blacks will be treated more fairly in the future.