It begins with the ominous signs at street corners—banners bearing the names of fireworks factories. Little stalls slowly expand into bigger ones over the weeks leading up to Diwali. Every now and again, one hears a rocket shoot off in the middle of the night, followed by a starburst of pollution in the sky. And then, there are sudden sounds in the evenings and afternoons, of the odd “atom bomb” or “hydrogen bomb” or “Lakshmi bomb” being burst. With ab