Police in the central Indian state of Madhya Pradesh have arrested a man for urinating on a tribal worker in public.
Pravesh Shukla has been charged under the Scheduled Castes and Scheduled Tribes (Prevention of Atrocities) Act - a law meant to protect historically oppressed communities.
He was arrested after a video, which shows him urinating on the man, was widely shared on social media.
The incident has sparked outrage in the country.
Mr Shukla has not commented on the incident.
Some politicians of the main opposition party Congress have alleged that he is associated with the ruling Bhartiya Janata Party (BJP) - which is also in power in Madhya Pradesh. The BJP has denied the allegation.
The police also refused to comment on the allegation, saying that the "facts of the case need to be first investigated".
Despite laws meant to protect tribespeople, discrimination against them and other people belonging to India's lower castes - thought to number around 200 million - remains a daily reality.
They are some of the country's most downtrodden citizens because of an unforgiving Hindu caste hierarchy that condemns them to the bottom of the ladder.
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