I can't speak for all the ways, but one way that I do know would be name: a Sikh guru in the 17th Century mandated that all of his followers change their surnam

I can't speak for all the ways, but one way that I do know would be name: a Sikh guru in the 17th Century mandated that all of his followers change their surnames (males to Singh, females to Kaur) to try and get rid of caste discrimination among his followers.