Nationalism!
What nationalism?
In a country where ordinary people are treated as third-rate citizens by the Riyasati Ashrafiya and Ashrafiya and no ordinary person enjoys dignity, Etc. Etc. Etc., how come nationalism emerges there?
Nationalism grows up in a society where ordinary citizens feel indebted to their state, government, its institutions, etc. (police, courts, bureaucracy, government machinery), where they feel proud of being citizens of their state and not running away from it.
In such a society, various divisions, ethnicity, etc. mostly evaporate; if they do not, they run out of steam.
Nationalism cannot be inculcated artificially from above. It grows up naturally from below.
[A response to a message in a WhatsApp group regretting the absence of nationalism in Pakistan.]