@K Khan You said: 'According to Hinduism, he said, God created man unequally. People are innately divided into four groups, called "castes."'
All humans have different nature and should adopt work as per their nature (Brahmanas, ksatriyas, vaisyas and sudras are distinguished by their qualities of work in accordance with the modes of nature. -- Bhagavad Gita 18.41). This is only logical and anything contrary will only lead to frustration and chaos.
'"That is the worker class -- the people behind India's industrialization, the guys who pull the rickshaws, the guys who work in the fields, the farmers, etc.," he said.' And the 'he' is? Anyway, not just those people even the technical ones who work in IT or other industries are shudras (including myself). They have all the rights except for reading the shruti which requires many years of training in vedanga and other aspects to be able to understand the vedas. All should read the smritis including puranas and itihasas (particularly Mahabharata) in any case.
'Outside the caste system -- that is, the "outcastes" -- are the Dalits.'
This has nothing to do with sanatana dharma. Of course, those who do not follow the sanatana dharma are outside the varnashrama and have been termed variously in the texts (e.g. mlecchas, yavanas, ...). Some people for their selfish interests introduced this practise which should have been gotten rid of if not for the politics of british and then by Ambedkar.
