31.   Doors have been replaced by clear plastic shields to improve visibility for drivers.

32.   Firebombs, made of gasoline and paint thinner, exploded in yellow blazes among riot police forming human barriers with plastic shields interlocked in front of them.

33.   From time to time, Israeli soldiers, using plastic shields to protect against a hail of rocks, charged forward to push back the crowd.

34.   From time to time, the troops, using plastic shields to protect against a hail of rocks, charged forward.

35.   Guards on the wing push a plastic shield along a track to avoid being pelted by liquids thrown through the bars and screens.

36.   He said plastic shields and helmets of some police were smashed.

37.   Helmeted riot police fired tear gas as they took cover behind metal barricades and plastic shields.

38.   Helmeted riot troops lined streets, carrying plastic shields and tear gas guns.

39.   Holding plastic shields, thousands of helmeted riot police stood guard.

40.   In poor neighborhoods of Bogota, demonstrators hurled rocks at helmeted riot police, who fired tear gas and crouched behind plastic shields.