With a firm resolve to purge the society of its blemishes, the Mahatma tried to usher in several reforms. Of all his campaigns for social reforms, the one that stands out is his crusade against untouchability.
Calling untouchability a blot on Hinduism, he was ready to openly rebel against Hinduism if someone could prove untouchability an essential part of the religion. To him, this regressive practice slithered its way into the religion when the latter was at its lowest ebb. So passionate was he about removing untouchability that he was even ready to part with his beloved wife if she disapproved of his campaign to abolish untouchability.
Such discrimination against a fellow human being, he believed, was no less than Dyerism and Indian society had no right for Swaraj if it did not abolish this custom. And thus, to make the society worthy of Swaraj, he started working against this custom right from the time of his return from South Africa.