He was one of the most talented guys who accomplished against most odds. Born as an untouchable caste in India, he excelled in studies that is unmatched to this day.
He was so frustrated with the generational and continuous bias and discrimination based on castes, he asked people in millions of his caste to mass convert to Buddhism. He said as long we stayed in Hinduism, we would never get a leveled playing field, let alone justice. Read about him if you would like.
That racism continues to this day.