I’ve watched too many movies saying that it is. However, I could be wrong. Maybe those movies were exaggerating things and/or maybe things are different now. My image of Italian Americans are people who would never let their daughter/son date a Black person and generally don’t want Blacks around at all – an attitude that even matches what’s seen in the worst Southern Whites.
Any Spike Lee movie
Casino or Goodfellas (no Blacks in them, but you get the picture Italians are not very tolerant.)