니거라고 한거 부정은 뭐냐

His friends made joke about teleporting to countries. They spoke in Chinese accent. They did Arabic-like accent when they showed Egypt. And then when they were in “America”, his friends dissed Jongin saying he was African-American, etc. He replied with a curse. 
Note that not everyone knows that N word is unacceptable by many people, especially when we heard that a lot from movies, pop music and culture. Not everyone learns western history in school. I don’t. Please do research or ask people who live in Korea.
Did predebut Jongin know the video his friends made are going to spread worldwide? No. Did he know he will be a top celebrity years later? No. 
Using the N word is wrong. It was a mistake. But please consider one’s background and circumstances.

P.S: you guys curse almost everytime you see pics of your idols, too.