Hating individual people from the US for their nationality is wrong.
Hating the US itself, its actions overseas over the last 200 years [*], the evil bastards who run it, its belief that it’s a force for good, and its belief that it can do anything it likes anywhere it likes to pursue these ‘good’ aims, is entirely right, proper and sensible.
If I met someone who was anti-American in the first sense, I’d think they were a cunt. The same would be true for anyone who wasn’t anti-American in the second sense.
[*] partial exception granted for its reluctant and delayed intervention in Europe 1941-45.