Five Greenpeace climbers evade security and scale a building at the centre of one of London's busiest areas before unveiling a huge billboard-style banner, which has a large picture of Ken, Barbie's on-off boyfriend, and reads: "Barbie, You‚re Dumped. Girls That Threaten Furry Animals Make Me Sick." The guerrilla tactic follows revelations that the packaging for Mattel's "Barbie" doll, the most famous toy in the world, is produced using pulp from the rainforests of Indonesia, home to endangered species such as the Sumatran tiger.