I have never seen anti American sentiment this bad

Bad is subjective?

I am speaking based on the response criteria of Korea's largest research institution.[1]

Nah, you misunderstood. He was saying that the label bad for anti-americanism was subjective.

Given their behaviour, some might see anti-americanism as justified or even good.

	▲	jdw64 2 hours ago \| parent [-]
		I didn't know that. Thank you for your kind explanation.