Bhimrao Ramji Ambedkar (14 April 1891 - 6 December 1956), popularly known as Babasaheb Ambedkar, was an Indian jurist, economist, politician and social reformer who inspired the Dalit Buddhist movement and campaigned against social discrimination towards the untouchables (Dalits), while also supporting the rights of women and labour. History, whether Indian or European, gives no unqualified support to this dogma. In Europe, the old traditions and superstitions which seemed to the eighteenth century to be the very root of injustice, have been eliminated. Who Were the Shudras? is a history book published by Indian social reformer and polymath B. R. Ambedkar in 1946. The book discusses the origin of the Shudra Varna. Ambedkar dedicated the book to Jyotirao Phule (1827 1890). In the book Ambedkar, citing Rigveda, Mahabharata and other ancient vedic scriptures, estimates that the Shudras were originally Aryans. They were a part of the Kshatriya Varna. Ambedkar also discusses Aryan race theory and rejects Indo-Aryan migration theory in the book. This comprehensive book throws a new light on Indian social history. Students and general readers will find this book valuable in their work.