A video, which shows an African-American attacking an old man on a local bus, has caused adverse reaction from Korean netizens.

One netizen posted the video, titled “A black man who derides an old man in a local bus,” on a website on Sunday. “The African-American made a disturbance for almost 20 minutes,” he said of the incident.

In the video, the young man wearing a blue T-shirt and a blue cap is mocking the old man, provoking an argument. He is saying bad words repeatedly not only in his native language but also in awkward Korean.

One woman sitting next to the victim is trying to prevent him from continuing such behavior, but the attacker, who cannot control his anger, starts hitting the old man. Some passengers in the bus request the bus driver to stop or go to a police station.

“How could this situation happen?” “It is so embarrassing that I cannot speak about it.” “The African-American has to be arrested” are among comments by furious netizens who watched the video.