“Overnight our public sphere changed. The sense of security was gone, we shut ourselves indoors, the parks were overtaken day and night, and we forbade children to go there,” Shefi Paz, the leader of a grassroots movement against illegal immigration to Israel, explained in an interview with the daily Maariv a few weeks ago. Women were harassed on the street,” she said. “It was like an occupation by a foreign army. No law, no authorities would protect citizens.” Paz is perhaps not the person you would expect to find at the front of such a protest movement. She is a 66-year-old lesbian, and a former left-leaning LGBT activist. She now sees herself as firmly on the right. For her, as for some in Israel, and for many in Europe and the US, the issue of immigration has changed the terms of the political debate, shedding new light on issues of justice and class. But above all the debate over immigration policy, it seems, is but a proxy for a far larger struggle over the future of …