 However, Christian missionaries such as John Muir and John Wilson drew attention to the plight of lower castes, who they said were oppressed by the upper castes since the Aryan invasions.Jyotiba Phule argued that the "dasas" and "sudras" were indigenous people and the rightful inheritors of the land, whereas Brahmins were Aryan and alien.In contrast to the mainstream views, the Hindu revivalist movements denied an external origin to Aryans.