Karl Marx once wrote in a newspaper article that British railways were primarily used to transport cargo, arms, and the army. He suggested that if the railways were utilized for passenger transport, people could migrate to find work, which would help eliminate discrimination. 

This statement was suppressed by the zamindar-backed communists in India.

In reality, it was the natural development of India's economy and population growth that led people to move away from traditional caste-based occupations (kula thozhil), not the influence of Dravidian ideology.