While “extracomunitari” technically includes Americans, it’s not commonly used as a slur against them. It’s mostly used for immigrants from poorer countries, such as North Africans and (before the EU was enlarged) Eastern Europeans.
(There are plenty of anti-American people too, but these tend to be not the same people as those who use “extracomunitari” as a slur.)
While “extracomunitari” technically includes Americans, it’s not commonly used as a slur against them. It’s mostly used for immigrants from poorer countries, such as North Africans and (before the EU was enlarged) Eastern Europeans.
(There are plenty of anti-American people too, but these tend to be not the same people as those who use “extracomunitari” as a slur.)