Entertainer and YouTuber Jonathan jokes about an online meme in a video uploaded to his YouTube channel this year. Captured from Jonathan's YouTube channel

Four Black men stand at a crosswalk in Seoul around midnight. When the light turns green, they move across the street in a tight, slightly hunched group.

“Oh, I’m glad we’re holding Starbucks,” one of them jokes. "We don't look dangerous now, do we?"

The other three burst out laughing. Then one whips around toward the camera. “I saw you put gangster music over the last video when we were walking. Is that what we look like to you?”

The scene from a YouTube video is a sort of content rarely seen in Korea. Race is not a subject that often enters casual public conversation, and humor built around skin color is rarer still.