The body was taken to Vankar's hometown Unjha in Mehasana district, where his last rites will be performed later on Monday, Subodh Parmar of the Dalit Adhikar Manch said.
The team members said that Dalits are "soft targets" for these vigilante groups.
'If Modi sincerely thinks that Dalits are also Hindus then spread this message to the entire nation through programmes like Mann Ki Baat.' 'We would love to listen to the PM tell the nation to look upon us as fellow Indians and human beings.'