A Kar Sevak is someone who offers services for free (that is, a volunteer) to a religious cause. It originates from the Sanskrit words kar (hand) and sevak (servant).[1]
Although the term has recently been used ostensibly in the context of Hindutva, a kar sewak may be working towards any theological denomination. After Operation Blue Star, Sikh Kar Sevaks helped in rebuilding the Harmandir Sahib, the holiest Sikh shrine. Subsequently, It has been adopted to refer to people who often pay visit to the controversial historic Hindu holy site Ram Janmabhoomi to perform building or prayer activities, the former site of Babri Mosque in Ayodhya, Uttar Pradesh.