Streets of India | Need Documentary Idea

(India)

I'm a student and we have to make a documentary on the streets of our city... so for that we have to select an area to explore.. eg: one of my classmates has selected the topic of love birds in the city, its about couples exposing/showing off their love in kisses everywhere.

So I wanted to go for some eye-opener but can't think of one. I thought about child labour.. Any other suggestions please?