Dona DeSanctis is fine with the occasional Mafia movie or, as she puts it, a TV ad "where a big, fat Italian woman is doing somersaults in a field just because the spaghetti sauce comes in a jar." But DeSanctis, deputy executive director of the Order Sons of Italy in Washington, D.C., finds nothing funny about "Shark Tale," a DreamWorks animated feature set for release in October. DeSanctis' organization is collaborating with Italian-American activists in Chicago and across the nation who are angered by the movie's sharks -- big-nosed, brutish-looking wiseguys with names such as "Don Brizzi" and "Don Lino."...