Videos show Noor bin Ladin, 34, standing on a boat in Geneva Lake, Switzerland waving the banner. The 9/11 mastermind’s niece has expressed her support for Donald Trump in the past, and has said she believes he won the 2020 election.
In one of Ms bin Laden’s Instagram videos, she can be seen defiantly holding up the flag as officers on a Swiss police boat try to talk to her.
“You’re going to arrest me? If I don’t give you the signs, you’re going to arrest me?” she asks the officers. “Donald Trump won the 2020 election, and we’re not allowed here in Switzerland?”
In reality, Mr Trump lost the election to Mr Biden. Dozens of lawsuits by Mr Trump’s campaign failed to prove that the results were fraudulent.
In an interview she did later with the right-wing site InfoWars, Ms bin Laden said the police confiscated her signs.
“I thought we were living in a free country, but apparently not,” she said.
“I have been a supporter of President Trump since he announced he was running in the early days in 2015. I have watched from afar and I admire this man’s resolve,” she said then. “He must be reelected ... It’s vital for the future of not only America, but Western civilisation as a whole.”
Some time after Ms bin Laden’s protest, Mr Biden met with Mr Putin in Geneva to discuss various points of tension in US-Russian relations. Though there were no major breakthroughs, both leaders described the meeting as positive.
“I must tell you, the tone of the entire meeting, I guess it was a total of four hours, it was good,” Mr Biden said afterward.
“There has been no hostility,” Mr Putin said. “On the contrary, our meeting took place in a constructive spirit.”
No mention was made of Ms bin Laden’s flags.