It is a black person who is a sanitary worker in the USA or UK. "Race is the foundation of this sub-human status of Negroes in a white world."
It is the untouchable who is a scavenger or sanitary worker in India, Nepal, Sri Lanka, Bangladesh, Pakistan, and Japan. In a Hindu, Islamic, Buddhist, Sikh, Jain, and Parsi world, caste is the basis for the sub-human status of untouchables.
Gender is the basis for the unemployment of sexual minorities across the globe.
Dr.Suryaraju Mattimalla, Why I Am Not Indian: The Untouchable Rejecting India's Citizenship