Barbarians from the Middle East tried to invade India much before the birth of Islam around the year 600 AD. The success rate improved after the Muslims replaced the earlier invaders from Middle East. By the year 1000 AD, Muslims had a strong foothold in India.
Quran explicitly prohibits idol worship. It considers the idol worshippers as kafirs or infidels.
Muslims killed more than 30 million Hindus in India and plundered thousands of temples, because they are kafirs or infidels. In one instance, Muslims killed more than a lakh Hindus in a single marathon killing spree. Muslims raped several Hindu women. Muslims considered Brahmins to be the most infidel or kafir of all Hindus and they targeted them specially.
Muslims looted India and carried gold and jewels to their countries in the Middle East. In one instance, they carried gold and jewels on 90 elephants. They used them to decorate their palaces and mosques in their countries.
