Give a stream of consciousness and then the final answer. Emily Wilding Davison (11 October 1872 -- 8 June 1913) was a suffragette who fought for votes for women in the United Kingdom in the early twentieth century. A member of the Women's Social and Political Union (WSPU) and a militant fighter for her cause, she was arrested on nine occasions, went on hunger strike seven times and was force fed on forty nine occasions. She died after being hit by King George V's horse Anmer at the 1913 Epsom Derby after she had walked onto the track during the race.

Answer this question: who threw themselves in front of a horse?
The relevant information is: She died after being hit by King George V's horse Anmer at the 1913 Epsom Derby after she had walked onto the track during the race.
So, the final answer is Emily Wilding Davison.