I have not seen the movie. But I read that this is based on the Battle of Saragarhi. It is the most inappropriate song to play on Independence Day!
The Imperial, colonial British Raj sent a mercenary army of Sikh soldiers to occupy independent, sovereign Afghanistan. Naturally, the fiercely independent-minded Afgan people butchered them. And rightly so.
Why is this event patriotic for India? It is patriotic for the Afghans.
And this song, “Teri Mitti…” It's not your mitti, Ishar. Neither is it British mitti. It is AFGAN mitti. You are a paid mercenary.
If you cared for your “Teri Mitti”, you should have stopped serving the British and shot that General Dyer in the head. Thank you so much.
India is a funny place, with a funny sense of history, particularly now, in this topsy-turvy new Hindutva India.