Members of a high caste enjoy more wealth and opportunities while members of a low caste perform menial jobs. The highest class/caste is the Brahmin, and the lowest, are the Untouchables, or pariahs. To be born into an Untouchable caste meant you were looked down upon society, and people, like the name Untouchable, could not even touch you. People in the highest caste had more job opportunities, and had more privileges.
The artists during the Middle ages were influenced by the teachings of the Church and their art focused more on religious figures and themes. The intelectual philosophy of humanism affected the Renaissance artists with the belief of man being the center and not God. Even in paintings of a religious figure, the focus was on man.