In a major speech on untouchability at Nagpur in 1920, Gandhi called it a great evil in Hindu society but observed that it was not unique to Hinduism, having deeper roots, and stated that Europeans in South Africa treated "all of us, Hindus and Muslims, as untouchables; we may not reside in their midst, nor enjoy the rights which they do".[2] Calling the doctrine of untouchability intolerable, he asserted that the practice could be eradicated, that Hinduism was flexible enough to allow eradication, and that a concerted effort was needed to persuade people of the wrong and to urge them to eradicate it.[36]