Donald J. Trump has fired a campaign adviser after racially charged Facebook posts under his name emerged last week, Mr. Trump’s campaign manager said.  “Effective immediately, low level part-time consultant, Sam Nunberg is no longer associated with the Donald J. Trump for President campaign,” the campaign manager, Corey Lewandowski, said in a statement.  Mr. Lewandowski reached out to a New York Times reporter on Sunday to reveal the news.  On Friday, the website Business Insider reported that posts on Mr. Nunberg’s Facebook page in 2007 disparaged the Rev. Al Sharpton’s daughter using a racial slur.  Mr. Nunberg told Business Insider that he didn’t recall writing the posts. Mr. Lewandowski said on Friday that he was opening an investigation; and that Mr. Nunberg would be fired if the posts were real.  In an interview on Sunday, Mr. Nunberg, a lawyer, denied writing them, Mr. Lewandowski did not respond to subsequent questions about the firing.  Mr. Nunberg has worked for Mr. Trump in various roles over the years. He was fired in 2014 after Buzzfeed published a mocking profile of Mr. Trump. But he was rehired, and has since been in Mr. Trump’s small inner circle.  Another aide to Mr. Trump, Michael Cohen, a lawyer who works for the candidate’s company, recently apologized for remarks he made about spousal rape to the Daily Beast over an article it was writing regarding Mr. Trump’s divorce from Ivana Trump, his first wife.  The Facebook posts were uncovered at the same time news outlets began ramping up their vetting of Mr. Trump’s own record and past statements.  Others who have dealt with the Trump campaign, such as Chris Ruddy, the editor-in-chief of the conservative-leaning site Newsmax, defended Mr. Nunberg.  “I think Sam’s been fired before, hasn’t he?” Mr. Ruddy said in an interview and referring to the BuzzFeed piece, which called into question whether Mr. Trump would ever begin a presidential campaign.  Mr. Ruddy called Mr. Nunberg loyal to a fault to Mr. Trump, and credited him with getting his boss entry with conservative news outlets followed typically by the grassroots.  “Sam’s a tough New York guy who tells it like it is, sort of like Donald Trump,” Mr. Ruddy said.  Correction: August 2, 2015 Because of an editing error, an earlier version of this article misidentified Chris Ruddy, who defended a former Trump campaign aide who had been fired. Mr. Ruddy has dealt with the Trump campaign, he has not worked for it.
The adviser, Sam Nunberg, had been accused of using a racial slur in posts in 2007 to disparage the daughter of the Rev. Al Sharpton. He denied he was the author of the posts.