The truth is he has tried to close borders with Muslim-majority countries, he is caging small Mexican children, he has grabbed women and boasted about it. He is a sexual predator, he is a racist and its right to say that – we need to think about when is it our country got so scared? she told BBC Radio 4s Today programme.
Thornberry said Corbyns attendance at a state banquet for the Chinese president, Xi Jinping, was a different situation.
Jeremy Corbyn greets thousands on streets as Donald Trump calls protests fake news
When you have a close friend and theyre going wrong, you are more likely to be adamant with them and clearer with them than someone who has not been as close a friend and someone you are trying to build a relationship up with, she said.
Thornberry, speaking earlier on ITVs Good Morning Britain, said Labour would not refuse to engage with Trump, but would do so without pomp and ceremony.
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When I become foreign secretary, I hope that what he will respect and understand is a certain amount of strength and an ability to be able to say what it is that you think, and not be bullied and kowtowed and shouted over. And say Britain is a friend of a America, you are going wrong, she said.
The 'Carnival Of Resistance' will take place today as Donald Trump holds talks with Theresa May at St James' Palace.
The shadow foreign secretary called the governments attitude pusillanimous, its too weak, it doesnt stand up to him, and said the president undermines the world order in a hugely risky way.
Thornberry said she had written to Buckingham Palace to pre-emptively decline an invitation to the state dinner hosted by the Queen at the palace on Monday night, which Corbyn also declined to attend.
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I didnt want to embarrass the palace by them sending an invitation and me saying no. So I wrote and pre-empted it, she said.
Trumps entourage will also include two identical seven-seat black armoured limousines nicknamed The Beast, and a number of presidential helicopters. The president has at his side at all times one of five rotating military aides who carry the nuclear football which can trigger a missile strike – equipped with communication tools and a book with prepared war plans.
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The Queen invited the president over on the advice of the prime minister. That advice was wrong. Im not saying that he should not come and have business meetings, Im not saying we shouldnt talk to him, but the things I want to say to President Trump I probably shouldnt say in front of Her Majesty. We would end up having an argument.
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A huge police and security operation was under way on Tuesday morning, with protesters barred from demonstrating directly outside Downing Street and road closures in place.
Organisers of the Together Against Trump protest have billed the day as a carnival of resistance, with demonstrators gathering at Trafalgar Square from 11am to declare a Trump-free zone.
Trump says Brexit can and should happen as he dismisses Corbyn and protesters
Demonstrators will not be permitted to march past Downing Street, as part of Whitehall will be closed off, the Metropolitan police confirmed on Monday afternoon. Organisers had initially planned to demonstrate outside the entrance to Downing Street as Trump held talks at No 10.
May quickly suggested that might not be acceptable to the UK but did not rule it out. The point about making trade deals is that both sides negotiate and come to an agreement about what should or should not be in that trade deal for the future, she said.
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Theresa May, who is hosting the US president as one of the final acts of her premiership, will not hold a one-on-one bilateral meeting with him, but will host Trump in Downing Street on Tuesday for a series of events, including a press conference later in the afternoon.
She will insist the relationship between the US and the UK is a great partnership, but one I believe we can make greater still.
The two leaders will jointly host a business breakfast with US and UK companies, highlighting the claimed benefits of a post-Brexit bilateral free-trade deal. Trump has tweeted that a big trade deal is possible once UK gets rid of the shackles [of the EU].
About 250,000 anti-Trump activists gathered when he flew into the UK in July last year for his first visit as US president.
Protests are also planned in Birmingham, Stoke, Sheffield, Glasgow, Edinburgh, Chester, Leicester, Oxford and Exeter.
Donald Trump should be treated “like a bully” and the UK should “stand up to him” the shadow foreign secretary has said.
Trump tests US-UK special relationship, upsetting British figures before state visit
Emily Thornberry told the Today programme that the American president “admires strength” so the UK should not “bow down” to him.
Protests of Trumps state visit are planned in several UK cities, including a demonstration in Trafalgar Square.