...customers are now being urged to boycott [Caterpillar] because it supplies bulldozers to the Israeli government, which uses the vehicles to destroy Palestinian homes, roads and olive groves...the parents of Rachel Corrie, a 23-year-old American peace activist who was crushed and killed by an army-driven Caterpillar bulldozer in Gaza in 2003, are backing the boycott...A spokesman for the firm said: "Caterpillar shares the world's concern over unrest in the Middle East...We have neither the legal right nor the means to police individual use of [Caterpillar] equipment." [also refers to John Lewis (part of John Lewis Partnership), River Island (part of Lewis Trust), Nike, Gap, Wal-Mart, Nestlé, French Connection, Tesco]