Thousands of women around the world are taking to the streets for the 2018 Women's March, a year after the first such event was held in opposition to new US President Donald Trump.
Protests are expected across the US in New York, Washington DC, San Francisco and hundreds of other cities.
Events were also set to be held in across Europe, Beijing, Sydney and elsewhere on Saturday, with further events in Las Vegas - where organisers will hold a "Power to the Polls" voter registration driv - and London on Sunday.
In 2017 people protested Mr Trump's previous comments about women as far afield as Antarctica, the marches also created solidarity for those denouncing Mr Trump's views on abortion, immigration, LGBT rights.
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Afterward, a wave of women decided to run for elected office and the #MeToo movement against sexual misconduct became a cultural phenomenon.
“We made a lot of noise,” said Elaine Wynn, an organiser. “But now how do we translate that noise into something concrete or fulfilling?”
The marches come amid the battle over a US government shutdown, which has disrupted Mr Trump's celebrations of the anniversary of his inauguration on 20 January 2017 and caused major conflict between Republicans and Democrats in what is an important election year with midterm elections across Congress in November.
Linda Sarsour, one of the four organisers of last year's Washington march, told the Associated Press that Las Vegas was set to hold a major rally on Sunday because it's a strategic swing state that gave Hillary Clinton a narrow win in the presidential election and will have one of the most competitive Senate races in 2018.
Democrats believe they have a good chance of winning the seat held by embattled Republican Senator Dean Heller and weakening the Republicans' hold on the chamber, where they have a 51-49 seat advantage.
Organisers say Nevada is also a microcosm of larger national issues such as immigration and gun control after Las Vegas became the scene of the deadliest mass shooting in modern history.
Agencies contributed to this report
