Explanation: The SNDP movement was an example of a regional movement born out of conflict between the depressed classes and upper castes.

It was started by Sree Narayana Guru Swamy (1856- 1928) among the Ezhavas of Kerala, who were a backward caste of toddy-tappers and were considered to be untouchables, denied education and entry into temples.

Source: Spectrum Modern India