On 21 May 1914 a large group of women marched to Buckingham Palace. This flyer publicises the march. The 21 May protest became notorious when Pankhurst was arrested outside the gates of Buckingham Palace, shouting ‘That’s right! Arrested at the gates of the Palace! Tell the King.’ Photos of the arrest were circulated around the world and remain iconic images of the suffragette movement. The suffragettes’ struggle to obtain the vote was overtaken by the First World War, putting their cause back years. The vote was not extended to all women in the United Kingdom until 1928.