Kudos to the director for intensive research work and flawless writing.
Finding gaps in the witnesses' statements, Chandru discovers that they were committing and asks the court to investigate Sub-Inspector Gurumurthy a casteist , head constable Veerasamy and constable Kirubakaran.
They have a girl child, and are expecting another one soon.
She doesn't pay heed to it and continues walking, past the people who stayed silent when her husband was humiliated in public, past the dominant caste president who refused to help her despite having the power to do so, in front of the police who slapped her and abused her.
He comes home to realise that the British Raj might have left the country but the feudal system that is detrimental to the villagers, is still intact.
The writers even write him carefully, not giving him much of a back story.