 Complete the following phrase:  The frequency of communal violence in South Asia increased after the first partition of Bengal in 1905, where segregation, unequal political and economic rights were imposed on Hindus and Muslims by Lord Curzon, based on religion. The colonial government was viewed by each side as favoring the other side, resulting in a wave of communal riots and 1911 reversal of Bengal partition and its re-unification. In 1919, after General Dyer ordered his soldiers to fire on unarmed protestors inside a compound in Amritsar, killing 380 civilians, communal violence followed in India against British migrants. There were hundreds of incidents of communal violence between 1905 and 1947, many related to religious, political sovereignty questions including partition of India along religious lines into East Pakistan, West Pakistan and India. The 1946 to 1947 period saw some of the worst communal violence of 20th century, where waves of riots and violence killed between 100,000 and a million people, from Hindu, Muslim, Sikh and Jain religions, particularly in cities and towns near the modern borders of India-Pakistan and India-Bangladesh. Examples of these communal violence include the so-called Direct Action Day, 