Instruct: Classify Amazon reviews into positive or negative sentiment
Query: The Indus Valley civilisation was made by Dravidians

Anyone who looks at a person from Tamilnadu in the south and a person from Uttar Pradesh in the north can tell that 'India' is not made up of one racial type. 'Aryans' live in the north, the further north the more pure, and 'Dravidians' in the south, the further south the more pure blooded. There was an Aryan invasion, saying otherwise is merely reactionary nonsense, designed to undermine the achievements of the Dravidian people.