Anti-royalists in the West Indies have borrowed a hashtag from Hillary Clinton supporters, turning #NotMyPresident into #NotMyPrince.
Prince Harry, 32, has just arrived in Antigua for a two-week tour that will take in six nations where his grandmother is head of state, and Guyana, where she's not.
He's there on behalf of the Queen, whom at 90 doesn't fly long-haul anymore.
Harry's been sent to celebrate the independence of Barbados, Guyana, Antigua and Barbuda, so it's perhaps ironic his visit has been met with a campaign to ditch the monarchy.
Activists using the hashtag #NotMyPrince have taken to social media to present an "anti-colonial welcoming committee" for the 32-year-old prince.
There's a Tumblr account posting memes, and a Twitter account reminding Harry of the "legacy of slavery (which the royals were responsible for)".
Prince Harry meets an official in Antigua (Reuters)
According to British newspapers the account is based in Barbados, where Prime Minister Freundel Stuart recently broke a promise to ditch the Queen of Barbados - Elizabeth II - with a ceremonial president, whose powers would remain ceremonial.
While in Barbados, Harry will take in a show from Rihanna. In Antigua, he'll face fast balls from cricket legend Sir Curtly Ambrose and pitch a few himself at master blaster Sir Viv Richards.
"Prince Harry has been looking forward to this tour for many months," a palace source told UK papers.
"There should be plenty of fun along the way."
Protesters in the US used the hashtag #NotMyPresident to organise demonstrations in the week following Donald Trump's election victory, earlier this month.
Harry is fifth in line to the throne, behind his dad, brother, niece and nephew.