She listed Mr Trump's immigration policies, bans on some people entering the U.S., his foreign policies, and lack of support for taking action on climate change as having affects across the globe.
But, he added: "Whether he sees it, whether he reacts to it, we don't really care".
Right-wing think tank Bow Group is holding a pro-Trump rally in Westminster to show support for the president. In London, we speak with Sheila Menon, social justice activist and one of the organizers behind the Trump baby blimp. "But I believe the people in the UK, Scotland, Ireland - as you know I have property in Ireland, I have property all over - I think that those people, they like me a lot and they agree with me on immigration".
US President Donald Trump arrives in Britain on Thursday for talks with the leader of the United States' closest ally in Europe. Both those accords were the result of years of painstaking diplomacy by European leaders, and Trump unilaterally trashed them.
At a news conference, Trump said the United States could withdraw from North Atlantic Treaty Organisation and go it alone, if necessary, although he said that likely won't be needed. Tens of thousands have joined Facebook events and organised demonstrations around the country, some describing their anti-Trump movement as a "carnival of resistance".
He believes Mr Trump's visit shows his respect for the United Kingdom, as his political career would get more of a boost from staying at home and campaigning in America.
Tomorrow, May and Trump will visit an unnamed defence site to view a demonstration of UK military capabilities, as a showcase of integrated UK-US military training.
Trump will spend Thursday night in London at Winfield House, the official residence of U.S. Ambassador to Britain Robert "Woody" Johnson.
Ignoring all diplomatic niceties, the convention-shredding USA president set up the four-day visit with a rebuke of May as she battles to stop her government falling apart over Brexit. Separately, his wife, Melania, will visit war veterans and schoolchildren in a London visit accompanied by Philip May, the prime minister's husband.
He is due to stay overnight at the ambassador's Winfield House residence in London's Regent's Park, where demonstrators plan to play recordings of migrant children held in USA detention centers. She said they will discuss security and defense, an aspect of the relationship that is causing anxiety for some British politicians.
The trip coincides with a tumultuous week for May after two senior ministers resigned in protest at her plans for trade with the European Union after Britain leaves next March.