The indian constitution provides reservations for Dalits and other social discriminated groups, many of the Dalits prefer these jobs rather than private sector, moving out of India to a western country is also a costly affair (via education or immigration programs), which many of the dalit families cannot afford. Many of the indians I know want to get out of the country, no wonder, upper caste indians, who has the economic means to move out make up the majority
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