Justin Bieber has apologised again for a second racial n-word slur – admitting "I need to step up and own what I did".
He has already been condemned for being caught on video joking about why black people are scared of chainsaws, in which he uses the n-word.
This time he is filmed singing "if I kill you...there will be one less lonely n*****" in a racist parody to his 2009 second single One Less Lonely Girl.
The clip features a very young Bieber singing: "One less lonely n*****. If I kill you, I'll be part of the KKK, and there'll be one less lonely n*****."
The Ku Klux Klan is one of the most feared and racist organisations in US history. It is classified as a hate group by the Anti-Defamation League and was estimated in 2012 to have between 5,000 and 8,000 members.
In the previous video, he asked: "Why are black people afraid of chainsaws?" Guessing the punchline, someone off camera said: "Don't even say it. Don't say it." However Bieber continued saying: "Run n****r, n****r, n****r, n****r, n****r."
Now Bieber is contrite and keen to put things right with millions of his young fans.
He told the Sun: "I just hope that the next 14-year-old kid who doesn't understand the power of these words does not make the same mistakes I made years ago.
He refused to blame his youth and agreed his actions were unacceptable.
"At the end of the day I just need to step up and own what I did."
Bieber is currently keeping a low profile at the Mexican luxury holiday destination Playa del Carmen.
Campaign group, Love Music Hate Racism that holds concerts to tackle prejudice around the UK, branded the singer's actions "disgraceful".
Spokesman Vince Maple said: "Someone of Justin Bieber's international fame making such inappropriate comments is unacceptable. He is idolised by millions worldwide and making such disgraceful comments has no place in the 21st century."