2 February 2010: Demonstrators dressed as Na’vi from Avatar for the weekly demonstration against Israel’s separation barrier, in Bilin

3 / 9

Demonstrators wave Palestinian flags
Photograph: Bernat Armangue/AP

2 / 9

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

3 / 9

Demonstrators wave Palestinian flags
Photograph: Bernat Armangue/AP

4 / 9
Demonstrators dressed as Na’vi characters in Bilin

5 / 9

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

6 / 9

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

7 / 9

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

8 / 9

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

9 / 9

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