LONDON -- President Trump got a congratulatory phone call on Saturday from Canada’s Prime Minister Justin Trudeau, and British Prime Minister Theresa May will visit Mr. Trump at the White House next week.

A spokesman for Russian President Vladimir Putin said Saturday that Mr. Trump should also expect a phone call from Putin soon.

Meanwhile, anti-Trump demonstrations were held in cities around the globe.

Protests were held around the globe after President Trump’s inauguration on Jan. 21, 2017. CBS News

Protesters in the tens of thousands snaked through the streets of London Saturday in solidarity with the Women’s March on Washington.

Ivonne, from Hinckley, England, said the overall message she wanted to send to the U.S. was that “we’re with you in this.”

“I think there’s a lot of people in the U.S. that also don’t agree with his inauguration,” she said.

The U.K. may be an ocean apart, but protesters here took the U.S. election personally, crediting Mr. Trump’s campaign rhetoric for fueling Europe’s nationalist movement, which gained steam with last summer’s Brexit.

“I felt very strongly that we shouldn’t Brexit -- and we have done,” said Moira from London. “We need to be, we want to be a united world.”

Around the world on Saturday, more than 600 marches swept through major cities.

From Paris to Prague, Rome to Berlin -- even as far away as Japan and Australia -- they are vastly different worlds united under one message.

Protesters in Japan on Jan. 21, 2017. CBS News

While Mr. Trump hasn’t taken criticism very well in the past, Moira said Mr. Trump would “most probably not” listen to their message, but she said, “one of the greatest things we’ve got is the freedom of speech and the right to speak.”

Saturday’s international turnout is a reflection of how important Mr. Trump now is -- and just how much some people around the world disagree with the tone he’s already set.