In the course of a few short days last month, billionaire philanthropist Stewart Rahr spent half a million dollars to bring Holocaust survivors to the Auschwitz-Birkenau death camps in Poland; then he flew on to Israel, where he doubled the size of a fleet of emergency medical response vehicles, connected with a charity that helps Jewish and Arab special-needs children and another that feeds Israel’s poor; held back-to-back meetings with other charities and politicians anxious for a chance to interest the fast-moving Rahr’s generous fancy and capped it all off with a private meeting with President Shimon Peres.\n