Minaj posted the photo on Wednesday on her website and Instagram page. It's for her new song Lookin Ass Nigga.
After she was criticised for what many saw as disrespect to a revered icon, she offered an apology on Thursday on Instagram to the estate of Malcolm X, who was assassinated 49 years ago this month at age 39.
She also said the song's artwork "is in no way to undermine his efforts and legacy".
"I apologise to the Malcolm X estate if the meaning of the photo was misconstrued. (...) I have nothing but respect (and) adoration for u," she wrote.
Still, she sounded exasperated that people were even upset.
Lookin is a male-bashing song. The photo of Malcolm X holding the
rifle was taken when he was trying to protect his family from death
threats after his home had been firebombed.
A Change.org petition was issued on Thursday, encouraging the rapper to change the cover artwork.
Minaj's personal representative declined to comment, and a rep for her record labels, Republic and Cash Money Records, didn't return e-mails seeking comment. A lawyer for Malcolm X's children also didn't immediately respond to an e-mail from The Associated Press.
A Change.org petition was issued on Thursday, encouraging the rapper to change the cover artwork.
Minaj's personal representative declined to comment, and a rep for her record labels, Republic and Cash Money Records, didn't return e-mails seeking comment. A lawyer for Malcolm X's children also didn't immediately respond to an e-mail from The Associated Press.