An activist group mocked President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE during his state visit to the United Kingdom on Monday by projecting an image of a baseball cap emblazoned with the USS John S. McCain onto a London building.

The projection, which covered the outside of famed wax museum Madame Tussauds, referenced Trump's latest reported feud with the late GOP Sen. John McCain John Sidney McCainThe Memo: Trump's strengths complicate election picture Mark Kelly: Arizona Senate race winner should be sworn in 'promptly' Cindy McCain: Trump allegedly calling war dead 'losers' was 'pretty much' last straw before Biden endorsement MORE (Ariz.).

"Hey @realDonaldTrump, we read the story about the sailors on a US warship being ordered to hide from you because you’re triggered by the name on their hats," Led By Donkeys, a progressive, anti-Brexit activist group posted on Twitter.

"So we turned Madame Tussaud's into a giant USS John McCain baseball cap. Welcome to London!"

Hey @realDonaldTrump, we read the story about the sailors on a US warship being ordered to hide from you because you’re triggered by the name on their hats. So we turned Madame Tussaud's into a giant USS John McCain baseball cap. Welcome to London! pic.twitter.com/KuynOwupFm — Led By Donkeys (@ByDonkeys) June 3, 2019

The Wall Street Journal first reported last week that the White House asked the U.S. Navy to make sure the USS John S. McCain would be "out of sight" while Trump visited troops stationed in Japan.

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Trump said last week that he "didn't know anything about" the decision to obscure the ship during his trip to Japan, but defended the reported decision as "well-meaning."

McCain and Trump frequently clashed while the late senator was in Congress, and the president has continued to criticize the Arizona lawmaker nearly a year after his death from brain cancer.

Trump's visit to the U.K. has been met with protests.

Multiple media outlets have reported that as many 250,000 people are expected to turn out for protests against Trump in central London on Tuesday.

Led By Donkeys also projected the country's approval ratings of Trump and former President Obama on the Tower of London on Monday.

And protest banners reading "Resist Trump," were hung on Vauxhall Bridge by Amnesty International, according to the Guardian.

Trump said Monday that "tremendous crowds of well wishers" have turned out for his three-day visit to the U.K., adding that the "Fake News" media would be working hard to find protests against him.

"London part of trip is going really well," Trump tweeted hours after arriving in London.

"The Queen and the entire Royal family have been fantastic. The relationship with the United Kingdom is very strong," he added. "Tremendous crowds of well wishers and people that love our Country. Haven’t seen any protests yet."