During the 1920s in South India, the non-brahmins organised the Self-Respect Movement led by E.V. Ramaswamy Naicker. There were numerous other movements demanding that the ban on the entry of lower castes into temples be lifted.

Sri Narayana Guru in Kerala led a lifelong struggle against upper caste domination.

He coined the slogan “one religion, one caste, one God for mankind”, which his disciple Sahadaran Ayyapan changed into “no religion, no caste, no God for mankind”.

Source: ForumIAS