Avec environ 23 millions d'abonnés sur Instagram, le mouvement né il y a quelques mois exprime la colère de la jeunesse indienne.

They call themselves the "cockroaches" and they're on the march — demanding action against corruption, amid a shortage of opportunities for young people in India.

The months-old movement and the planned protest are seen as the biggest public challenge to Prime Minister Narendra Modi in his third term in office, drawing millions of…