Donald Trump has come under increasing pressure to condemn the white supremacy groups involved in the Charlottesville attack over the weekend.

Three people were killed amid violence, including two state troopers whose helicopter crashed and a woman who was rammed down by a white supremacist.

James Fields has been denied bail over the incident, which injured 19 others.

But Donald Trump has come under pressure to issue a fresh statement, denouncing and condemning the groups at the march.

Attorney General Jeff Sessions expected the president to do just that, adding that "racism and white supremacy are totally unacceptable".

After the violence, Trump simply criticised the actions of "both sides" but failed to go as far as singling out the members of the KKK, Nazi groups and other white supremacists who were in Charlottlesville.

But a speech by Trump's one-time presidential rival, Hillary Clinton, who used a campaign stump in August 2016 to discuss Trump's connection to white supremacists, has gone viral online.

In the speech, made in Reno, Nevada on the 25 August, Clinton spoke about how Trump failed to denounce the former Imperial Wizard of the Ku Klux Klan, David Duke, and only eventually backtracked after pressure during the election campaign.

The video which has been circulated on Facebook thousands of times and has had millions of views.

Excerpts from the speech:

"From the start, Donald Trump has built his campaign on prejudice and paranoia. He is taking hate groups mainstream and helping a radical fringe take over the Republican party. His disregard for the values that make our country great is profoundly dangerous.

"A man with a long history of racial discrimination, who traffics in dark conspiracy theories drawn from the pages of supermarket tabloids and the far, dark reaches of the internet, should never run our government or command our military.

"When asked in a nationally televised interview whether he would disavow the support of David Duke, a former Grand Wizard of the Ku Klux Klan, Trump wouldn't do it. Only later, again under mounting pressure, did he backtrack.

"So no one should have any illusions about what's really going on here. The names may have changed. Racists now call themselves "racialists." White supremacists now call themselves "white nationalists." The paranoid fringe now calls itself "alt-right." But the hate burns just as bright.

"And this isn't just about one election. It's about who we are as a nation. It's about the kind of example we want to set for our children and grandchildren.

"Next time you see Trump rant on television, think about all the children listening across America. Kids hear a lot more than we think."

White nationalists University of Virginia
White nationalists carry torches on the grounds of the University of Virginia, on the eve of a planned Unite The Right rally in Charlottesville, Virginia, U.S. August 11, 2017Reuters