London police arrested dozens of people outside the US embassy during a demonstration in support of a Palestinian activist group. According to official data from the London Metropolitan Police, as of the afternoon of Saturday, October 31, 2026, 48 protesters had been arrested. They arrested both those who held posters and people who simply supported them (like this elderly woman in the video). According to estimates, about 400 people showed up at the US Embassy in London holding signs that read: "I oppose genocide, I support Palestinian action."