They were shouting from the perimeter of his Ayrshire golf complex as he played a round of golf.
A blimp resembling US President Donald Trump floats above demonstrators marching to protest against the visit of Trump, in Edinburgh.
Meanwhile, thousands took to the streets in London on Friday against the USA president's first official visit to Britain.
After his visit to Scotland, Trump will travel to Helsinki, Finland for a meeting with Russian President Vladimir Putin on Monday.
"We politely listened to the chap who disagreed with the protest, we had our photo taken in a group as we smiled and waved, we had a little walk around town as kids started the "go away Trump" chant, then back to where we started to wave at cars as they beeped support".
Most of the controversy has centred on his other course, known as Trump International Golf Links.
The US president left Mrs May badly wounded when he criticised her negotiating style, lavished praise on Boris Johnson and attacked her Brexit plan in an interview with the Sun.
US President Donald Trump waits on the 4th tee at Turnberry golf course, Scotland.
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Kerber celebrated match point by covering her face and collapsing flat on her back, getting grass stains on her white outfit. Williams has won 23 Grand Slams, one shy of Margaret Court's all-time record of 24 singles Grand Slam titles.
Jonathon Shafi, of the group Scotland Against Trump, said he wanted to show solidarity with Americans against Trump. "We are not anti-American, just against Trump and his divisive regime". Aides had said Mr. Trump would spend the weekend preparing for Monday's meeting with Putin.
"No Trump, no KKK, no racist US", protesters could be heard saying from their spot near the rough. Retired schoolteacher Helen Broussard, 70, was holding up an anti-Trump placard that read, "Yer jaiket's oana shoogly pet, Donnie" - "Your jacket is on a wobbly peg" - meaning roughly that the president is on his way out.
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Protesters wear orange face makeup while the U.S. President is visiting Trump Turnberry Luxury Collection Resort in Scotland as people gather for anti-Trump rallies during his visit to the United Kingdom on July 14, 2018 in Edinburgh, Scotland. On Friday, protesters flew a blimp depicting the US president as an orange, snarling baby just outside the British parliament.
Trump is staying at the resort during his visit to Scotland.
Their meeting comes just after the Justice Department announced indictments against 12 Russian nationals as part of special counsel Robert Mueller's investigation of Russian interference in the 2016 election, accusing them of a "sustained effort" to hack Democrats' emails and computer networks. Police estimate the number of people gathering outside the Scottish Parliament in Edinburgh for the start of the demonstration at up to 3,000.
In Saturday's tweets, Mr. Trump cast blame on former President Barack Obama for failing to stop Russian election meddling. "It's also about giving a boost to those in America resisting his policies", said Daniel Jones, 26, who wore a red boiler suit and baseball cap emblazoned with "TRUMP BABYSITTER".
"I think that those people, they like me a lot, and they agree with me on immigration", Trump said of the Scots earlier this week, according to Quartz, adding, "I think that's why you have Brexit in the first place, because of immigration".