Ain al-Hilweh: Lebanon's biggest refugee camp

A gunman patrols the streets Photograph: Ghaith Abdul-Ahad/freelance

A view of the camp Photograph: Ghaith Abdul-Ahad/freelance

A man fixes a Palestinian flag on an electricity pole Photograph: Ghaith Abdul-Ahad/freelance

Graffiti and posters calling for the right of refugees to go back home Photograph: Ghaith Abdul-Ahad/freelance

Street celebrations Photograph: Ghaith Abdul-Ahad/freelance

A fighter with the left wing PFLP in his military HQ as he prepares to go out on a street patrol Photograph: Ghaith Abdul-Ahad/freelance

A military commander with the PFLP drinks coffee in his military HQ after a day of fighting Photograph: Ghaith Abdul-Ahad/freelance

Fighters from the Marxist group the Popular Front for the Liberation of Palestine Photograph: Ghaith Abdul-Ahad/freelance

Islamist fighters from the Palestinian jihadi group Jund al-Sham Photograph: Ghaith Abdul-Ahad/freelance

A tattoo on the shoulder of a Palestinian fighter depicts a famous revolutionary cartoon figure called Handhalah Photograph: Ghaith Abdul-Ahad/freelance

A mother and her child Photograph: Ghaith Abdul-Ahad/freelance

Saleh, a secular young man, stands at the stairs of his house Photograph: Ghaith Abdul-Ahad/freelance

Boys play in the street Photograph: Ghaith Abdul-Ahad/freelance

An Islamic barber shop Photograph: Ghaith Abdul-Ahad/freelance

A Palestinian girl, who fled her home in the Nahr al-Bared refugee camp, has lunch in a classroom in the Badwai refugee camp Photograph: Ghaith Abdul-Ahad/freelance

A PLO gunman patrols the streets Photograph: Ghaith Abdul-Ahad/freelance