He wrote it while in prison. It stands for me as the ultimate FUCK YOU by someone who has no power, who has no control, who can only give his life and does so with great enthusiasm:

Chashm-e Nam, Jan-e Shoreeda kafi nahin
Thumat-e Ishq poshida kafi nahin,
Aaj bazaar mein pabajolan chalo

Dast afshan chalo, Mast o Raqsaan chalo
Khaq bar sar chalo, khon bad-aman chalo
Rah takta ha sab Shahr-e Janaan chalo

Hakim-e Shaher bhi, Mujmaa-e Aam bhi,
Teer-i Ilzam bhi, Sang-e Dushnam bhi,
Subh nashaad bhi, Roz-i nakam bhi

Un ka dam saz apnay siva kon hai
Shehr-e Janaan mein ab ba-Sufa kon hai,
Dast-Katil kay shaiyan raha kon hai

Rakht-i dil bandh lo, dil fogaro chalo
Phir hamien Katl ho aiyn, Yaro Chalo

If you like, I will post a translation but I am not sure I have the words right (posting from memory)

A wet eye, a shaken life is not enough,
The accusation of a hidden love is not enough,
With feet in chains, Let us go in public today.

Let us go with palms exposed, with a song and dance,
with dirt in our hair, with blood on our chest,
Let us go while the entire city of lovers watches.

For the warden of the city, and the crowd of the commoners,
And the arrows of accusation, and the stones of abuse,
And the glum morning, and the failing day,

Who is there to give them life except us?
Who is ready in this city except us?
Who is honorable enough for the killer’s hand except us?

Pack up your belongings O Injured heart ones!
Let us go friends and get killed once again.
- Faiz Ahmed Faiz, 1959 (Lahore Jail)

[all mistakes in the translations are mine and should be excused]