Trump's new communications director has a long history on Wall Street and a love-hate relationship with the press

Anthony Scaramucci, who has been appointed to head the White House's communications operations, has a long history on Wall Street - and has been a big Trump backer and public advocate.

He previously worked at Goldman Sachs and later founded SkyBridge Capital, a fund of hedge funds firm that caters to America's rich dentists and doctors.

Sean Spicer, the White House's embattled press secretary, announced his resignation on Friday, reportedly after telling President Donald Trump that he strongly disagreed with the selection of Scaramucci.

Scaramucci is a household name on Wall Street, but relatively unknown elsewhere. Here's a primer.