Anxious, out of work and without access to transport during the nationwide COVID-19 lockdown in 2020, migrant labourers in India’s metropolises decided to walk back home to their villages en masse. As news channels beamed heart-rending silhouettes of millions of men, women and children marching along national highways with their meagre belongings, it became plain that the lockdown had already drafted one of the most traumatic chapters in the nation's modern history.

• Documentary