Barack Obama has said Hillary Clinton may have lost the election because she was seen by voters as an establishment “insider”.

Transcripts of paid private speeches made by the Democratic presidential candidate to financial executives from Goldman Sachs, Deutsche Bank, Morgan Stanley and others were published in October by Wikileaks.

It was reported at the time that Ms Clinton was paid $225,000 (£181,500) for one speech in 2013 and earned around $22 million (£17.7 million) in ‘speaking fees’ over two years.

“Hillary may have been more vulnerable because she was viewed as an insider,” the outgoing President told The New Yorker.

He said reporting around the Wall Street speeches “might have reduced her advantage, the normal Democratic advantage, in the eyes of working people, that we were standing for them.

“I don’t think it was fair, but that’s how it played itself out.”

One of Mr Trump’s campaign videos released days before the election showed images of Lloyd Goldman, CEO of Goldman Sachs, alongside archive footage of the Clinton Global Initiative and shots of Wall Street.

These were contrasted with videos of seemingly everyday Americans in the workplace.

Over the images, a voiceover spoken by Mr Trump blamed a "global power structure" for economic problems faced by American citizens.

“It’s a global power structure that is responsible for the economic decisions that have robbed our working class, stripped our country of its wealth, and put that money into the pockets of a handful of large corporations and political entities," he said.

“The only thing that can stop this corrupt machine is you.”

Bernie Sanders said Ms Clinton had lost because the party was more concerned with “raising money from wealthy individuals” than campaigning on behalf of ordinary people.

He told Radio 4’s Today programme the Democrats should have concentrated on "bringing working people into the party and taking on the billionaire class, taking on Wall Street, the drug companies or the insurance companies.”

“The Democratic Party has not been strong in standing up for working families,” he said.

The Obamas celebrate the Inauguration in 2009 and 2013 Show all 10 1 /10 The Obamas celebrate the Inauguration in 2009 and 2013 The Obamas celebrate the Inauguration in 2009 and 2013 WASHINGTON, DC - JANUARY 21: U.S. President Barack Obama and first lady Michelle Obama thank supporters during the Commander in Chief Inaugural Ball at the Walter E. Washington Convention Center on January 21, 2013 in Washington, DC. President Obama was sworn in for his second term earlier in the day. (Photo by Alex Wong/Getty Images) Getty Images The Obamas celebrate the Inauguration in 2009 and 2013 U.S. President Barack Obama and first lady Michelle Obama arrive for the Inaugural Ball at the Walter Washington Convention Center January 21, 2013 in Washington, DC. President Obama started his second term by taking the Oath of Office earlier in the day during a ceremony on the West Front of the U.S. Capitol. Getty Images The Obamas celebrate the Inauguration in 2009 and 2013 U.S. President Barack Obama and first lady Michelle Obama arrive for the Inaugural Ball at the Walter Washington Convention Center January 21, 2013 in Washington, DC. President Obama started his second term by taking the Oath of Office earlier in the day during a ceremony on the West Front of the U.S. Capitol. Getty Images The Obamas celebrate the Inauguration in 2009 and 2013 U.S. President Barack Obama dances with first lady Michelle Obama during the Inaugural Ball January 21, 2013 at Walter E. Washington Convention Center in Washington, DC. Barack Obama was re-elected for a second term as President of the United States. Getty Images The Obamas celebrate the Inauguration in 2009 and 2013 President Barack Obama and First Lady Michelle Obama ride in a golf cart an Inaugural ball 1/20/09 Official White House Photo by Pete Souza Getty Images The Obamas celebrate the Inauguration in 2009 and 2013 US President Barack Obama and First Lady Michelle Obama dance during the Youth Inaugural Ball at the Hilton Washington in Washington, DC, January 20, 2009. Obama was sworn in as the 44th US president earlier in the day. AFP PHOTO / Saul LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images) AFP/Getty Images The Obamas celebrate the Inauguration in 2009 and 2013 (L-R) US President George W. Bush, First Lady Laura Bush, Michelle Obama and president-elect Barack Obama stand outside the Diplomatic entrance of the White House on November 10, 2008 in Washington. Obama is visiting the White House at the invitation of Bush ahead of his January 20, 2009 inauguration as the next president. AFP PHOTO/Tim SLOAN (Photo credit should read TIM SLOAN/AFP/Getty Images) Getty Images The Obamas celebrate the Inauguration in 2009 and 2013 (L-R) US President George W. Bush, First Lady Laura Bush, Michelle Obama and president-elect Barack Obama stand outside the Diplomatic entrance of the White House on November 10, 2008 in Washington. Obama is visiting the White House at the invitation of Bush ahead of his January 20, 2009 inauguration as the next president. AFP PHOTO/Tim SLOAN (Photo credit should read TIM SLOAN/AFP/Getty Images) AFP/Getty Images The Obamas celebrate the Inauguration in 2009 and 2013 US President George W. Bush and president-elect Barack Obama make their way through the Colonnade on November 10, 208 to a meeting in the Oval Office of the White House in Washington. Obama is visiting the White House at the invitation of Bush ahead of his January 20, 2009 inauguration as the next president. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images) AFP/Getty Images The Obamas celebrate the Inauguration in 2009 and 2013 performs during MTV & ServiceNation: Live From The Youth Inaugural Ball at the Hilton Washington on January 20, 2009 in Washington, DC. President Barack Obama was sworn in as the 44th President of the United States today, becoming the first African-American to be elected President of the US. Getty Images

Mr Obama also told The New Yorker that social media and the proliferation of digital news sites “means everything is true and nothing is true.”

“An explanation of climate change from a Nobel Prize-winning physicist looks exactly the same on your Facebook page as the denial of climate change by somebody on the Koch brothers’ payroll,” he said.