Avatar protest at West Bank barrier

Protesters painted themselves blue and donned long hair and loincloths to draw a parallel between their struggle and that of the film's alien characters
Photograph: Darren Whiteside/Reuters

Israel says the barrier is needed for its security; Palestinians consider it a land grab
Photograph: Bernat Armangue/AP

Demonstrators wave Palestinian flags
Photograph: Bernat Armangue/AP

Demonstrators dressed as Na'vi characters in Bilin
Photograph: Oren Ziv/AFP/Getty Images

Demonstrators choke on teargas at the protest
Photograph: Bernat Armangue/AP

A protester uses a plastic bag for protection from teargas fired by Israeli border police
Photograph: Darren Whiteside/Reuters

The weekly protests often end in clashes with Israeli security forces involving stones and teargas
Photograph: Darren Whiteside/Reuters

A Palestinian protester runs to throw back a teargas canister fired by Israeli soldiers
Photograph: Darren Whiteside/Reuters

A protester takes shelter from the teargas
Photograph: Oren Ziv/AFP/Getty Images