Do overseas Indians have a high sense of national identity with India?

India has a caste system, and the rich in India rarely immigrate, because the superiority of the rich in India cannot be reflected, and Indians cannot adapt to the days without Indian food.

The poor in India are basically low castes, and low castes have the motivation to emigrate, because in India, low castes are not people at all. The lower castes who leave India will never miss their motherland. It is not illegal to kill the lower castes there in broad daylight, but it depends on leaving India. The Indian middle class cannot say that the lower caste will definitely not agree with India if it is killed.