She's not racist, she's never committed a crime, and she's never insulted anyone's religion. She's literally just being herself. Her only 'crime' was crossing her arms at immigration.
When I was at kr airport I didn't see many ppl using both hands, so why mad abt ive? when I went to convenience store the woman working there was using cellphone and didn't even looked at me when scanned but in Japan they was more worried abt it but koreans aren't that polite