It is a kind of racism my friend - it is not mentioned in the Hindu scriptures that those who are born to a Brahmin are also by birth brahmin. But in reality, that's how it is - a person is born into a caste, by birth.

For example, if a brahmin person has a baby, then that baby is brahmin by birth. But this is not what the scriptures prescribe. The scriptures mention the caste system by the nature of work one adopts.

But as you can see, it was easily corruptible. Even in 2020, there are brahmin people who explicitly state that they are the superior caste with no repercussions when the constitution mandates equal rights to its citizens. If this is not racism, what is ? Calling some fellow human being as inferior ?