Four men have been arrested after an image of US President Donald Trump alongside Jeffrey Epstein was projected onto Windsor Castle.
The stunt happened on the eve of Trump's state visit to the UK.
A 60-year-old man from East Sussex, a 36-year-old man from London, a 37-year-old man from Kent and a 50-year-old man from London were arrested on suspicion of malicious communications and remain in police custody, Thames Valley Police said.
Chief Superintendent Felicity Parker said: "We take any unauthorised activity around Windsor Castle extremely seriously.
"Our officers responded swiftly to stop the projection and four people have been arrested."
Other activists this week unveiled a huge image of Trump with Epstein in the area near the castle.
Trump said Tuesday after arriving in