De Blasio calls Brooklyn co-op's proposal a wrongheaded affront to American values and interests Public Advocate Bill de Blasio slams Park Slope co-op's proposed ban of Israeli products. Public Advocate Bill de Blasio is joining the Park Slope co-op food fight, slamming the proposed ban of Israeli products. “The inflammatory proposal to boycott products from the State of Israel is wrongheaded and an affront to American values and interests,” said de Blasio, who is not a co-op member. The three-year fight over whether to bar Israeli products is finally coming to a preliminary vote Tuesday. The 39-year-old organic-food haven plans to decide whether to hold a referendum for its 16,000 members on banning Israeli-made products like hummus, paprika and seltzer.