A million march for women's rights across the world

Scarlett Johansson has made an impassioned speech about Planned Parenthood, the sexual health charity, at a rally for women's rights.

"President Trump, I did not vote for you," the actress told the crowd in Washington DC, but she said she could still support him if he was willing to support all those who were "anxiously awaiting" his next move as leader.

The 32-year-old's speech was brought to an end prematurely after just seven minutes, but she appealed to the new president to think seriously about women's rights:

Pop star Madonna addressed Washington DC's Women's March on Saturday describing Donald Trump's inauguration as president as a "horrific moment".

"Welcome to the revolution of love," she said to the crowd of an estimated 500,000 people. "To the rebellion, to our refusal as women to accept this new age of tyranny."

In an expletive-laden speech, that was aired live on American television, she said: "It took this horrific moment of darkness to wake us the f*** up."

"Let's march together through this darkness and with each step know we are not afraid and we are not alone. We will not back down. There is power in our unity and no opposing force stands a chance in the face of true solidarity," she added.

The singer then went on to perform two of her hit records, Express Yourself and Human Nature.

Thousands of protesters attending the Washington DC Women's March have prompted organisers to divert the route.

The entire planned route to the White House was filled with protesters by 1pm, according to a District of Columbia official speaking to Associated Press on the condition of anonymity.

The crowd is now expected to move in the direction of the Ellipse, an area of the National Mall in front of the White House, along the lakefront.

The official estimated that more than half a million people had joined the demonstration on the Mall.

Filmmaker Michael Moore says he's at the Women's March on Washington "to vow to end the Trump carnage".

Moore is riffing on a phrase from President Donald Trump's inaugural address - he said on Friday that he would stop the "American carnage".

The activist says attendees "have to get busy" and call their members of Congress every day to protest Trump's policies.

Those concerned about Trump should join organisations like Planned Parenthood, the American Civil Liberties Union and environmental groups, he adds.

Transport officials in Washington DC said more people are likely to be on the National Mall for the Women's March than were at President Donald Trump's inauguration.

As of 11am on Saturday, 275,000 people had taken trips on the city's subway system.

On Inauguration Day, 193,000 trips had been taken as of that time, and the rail system opened an hour earlier that day, at 4 am.

A video shared on social media showed hundreds of people cheering as they arrived at the Metro station.

It was eight times more passengers than a normal Saturday and 42% more travellers than on Friday.

In addition, some 1,800 buses were registered to park in the city.

Greyhound reported adding more buses from New York and a commuter rail system in Washington added five times its normal capacity to help deal with the crowds.

London's mayor Sadiq Khan has joined tens of thousands of people marching through the streets of the capital to support women's rights.

Trafalgar Square is packed with protesters rallying against the election of Donald Trump.