Its an interesting question. Nationalism in India is not one or the other - which is to say eliminating poverty, sanitation, OR hating on Pakistan.
I would define it more as doing the exact opposite of what Congress did over the years. It has broadly three components - National security, legal system related to religion and development.
- National security: Congress has been weak on this - this is not just with respect to Pakistan, but overall. So now nationalism means being aggressive against anyone and everyone
- Legal system: Congress built and used the legal system to discriminate against the Hindus and also cultivated Muslims as a vote bank: An example would be that
- All major Hindu temples are controlled by the Government but Mosques and Churches are not controlled by the Government.
- The revenue earned by Temples is controlled by the Government but revenue from Mosques and Churches are not.
- Muslims have legal rights of polygamy, nikah which are not given to Hindus (triple talaq now made illegal).
- Right to Education laws that govern running schools are only applicable to Hindus but not to Muslims or Christians.
- Using the legal system to delay cases that pertain to Hindu faith like the Ram mandir case that had been dragging for decades.
These are just some of the examples of why there is almost a hatred of Congress and also a building resentment against Muslims who are seen to be in cahoots with Congress
3. Development: Congress was leading India to a Venezuelan style socialist paradise. Basic infrastructure which should have been done decades ago languished. Most people did not have bank accounts, India had the worlds largest population practising open defecation, highways were barely being built, massive corruption, etc.
BJP has done a LOT of good work on this. More than 300 million bank accounts for poor people opened in 4 years, now over 99% of households have at least one bank account and over 70% of individuals have their own bank accounts. Massive investment in sanitation leading to a dramatic reduction of hundreds of millions of people practising open defecation. very low corruption as all subsidies are electronically transferred to consumer bank accounts etc.
Now depending on the context, one of these three pillars rises. So while you as a Pakistani only tend to focus on the tv debates and voices on national security and Pakistani, you miss out on equally vociferous & ferocious debates on development and legal systems.
So, depending on the context, nationalism will focus on one or a mixture of these three broad pillars.
This is my view. I think
@Joe Shearer might have more to add to this conversation.