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In the wake of deadly violence following a white supremacist rally, George and Amal Clooney have donated $1 million to the Southern Poverty Law Center, a civil rights advocacy organisation that monitors hate groups.

The pair, which made the donation via their Clooney Foundation for Justice, join a number of others giving funds in recent weeks to anti-discrimination organisations, which have seen a surge in donations since clashes between white supremacists and anti-racism protesters amid a demonstration in Charlottesville, Virginia left one dead.

"What happened in Charlottesville, and what is happening in communities across our country, demands our collective engagement to stand up to hate," the Clooneys said in a statement announcing the grant.

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"We are proud to support the Southern Poverty Law Center in its efforts to prevent violent extremism in the United States." The unrest in Charlottesville at the rally called by neo-Nazi and other far-right extremists saw one woman killed after an avowed white supremacist ploughed a car into a group of counter-protesters.

US President Donald Trump faced fierce criticism following his comments that “both sides” were to blame for the violence that highlighted racial tensions in a nation on edge.

"Like George and Amal Clooney, we were shocked by the size, ugliness, and ferocity of the white supremacist gathering in Charlottesville," said SPLC President Richard Cohen.

"It was a reflection of just how much Trump's incendiary campaign and presidency has energised the radical right." Since the violence in Charlottesville the Anti-Defamation League ─ one of the oldest anti-discrimination organisations fighting antisemitism in the United States ─ has seen its donations spike sharply.

James Murdoch, the chief executive of 21st Century Fox, recently announced he was giving $1 million to that group.

Donations like that one, as well as those from corporations like Apple, Uber and MGM Resorts yielded a rise of "1,000%" last week, according to ADL spokeswoman Betsaida Alcantara, compared to the weekly average donations since the beginning of the year.

Another organisation combating racism and antisemitism, the Los Angeles-based Simon Wiesenthal Center, has also recorded major donations since then. One came from actor and former California governor Arnold Schwarzenegger.