The decisions by TIAA-CREF, the pension fund managers, to divest $73 million in Caterpillar stock from a socially-responsible investment fund and by MSCI, a Wall Street investment service firm, to delist Caterpillar from its index of "socially responsible" companies, have hit a giant political nerve. Palestinian solidarity groups are claiming the divestment as a victory-- because Caterpillar has long been a target of divestment initiatives. Meantime, pro-Israel groups are spinning the decision their way, saying that Caterpillar got axed for reasons unrelated to the occupation.