The paraglider’s actions came before thousands of protesters took to the streets of Edinburgh, the capital, and Glasgow on Saturday to rally against the American president, hoisting “Trump Baby” balloons, chanting slogans and carrying banners that read, “Dump Trump.”

He spent the weekend in Scotland before traveling to Finland for a meeting on Monday with President Vladimir V. Putin of Russia.

Assistant Chief Constable Mark Williams said in a statement, “Around 2,000 people were in Glasgow and approximately 250 were in Dundee on Friday evening, and a further 9,000 marched and took part in a rally in Edinburgh today.” Organizers said tens of thousands had turned out across the nation.

When Mr. Trump teed off at one of his golf courses on Saturday, surrounded by a phalanx of security officers, a group of protesters nearby unleashed a barrage of chants, including, “No Trump, no K.K.K., no racist U.S.A.”