Macklemore has apologised for a costume he wore on stage, which critics said was anti-Semitic.
The star said he didn't mean to offend anyone but realised the outfit could have looked like a "Jewish caricature".
"I respect all cultures and all people," he wrote on his website, external.
"I would never intentionally put down anybody for the fabric that makes them who they are. I love human beings, love originality and... happen to love a weird outfit from time to time."
The rapper wore the costume at a performance in Seattle on Friday.
He explained that he randomly chose the elements of the outfit so that he could disguise himself and move freely around during the secret show.
"I acknowledge how the costume could, within a context of stereotyping, be ascribed to a Jewish caricature," he wrote.
"I am here to say that it was absolutely not my intention and unfortunately at the time I did not foresee the costume to be viewed in such regard."
Pictures from the concert show Macklemore wearing a black wig, beard and a fake hooked nose.
The musician added: "I'm saddened that this story, or any of my choices, would lead to any form of negativity."
The rapper's website also now includes a link to the Anti-Defamation League (ADL), which was formed to fight anti-Semitism.
Along with Ryan Lewis, Macklemore is a Grammy award-winner and has been an advocate for the gay community, as well as tolerance and diversity, especially through the song One Love.
The pair performed the track at the Grammys in January.
Last month Lewis revealed his mother, Julie Lewis, has been HIV positive for 30 years.
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