What is "bongal"

Bongal is a derogatory slur used to refer to the Bengali Hindus and Bengali Muslims in Assam. The term lent the name to the infamous Bongal Kheda movement which resulted in an ethnic cleansing of Bengali Hindus from parts of Assam in the 1960s and 1970s. In a broader sense the term refers to anyone who is perceived as a foreigner.