This historic footage shows the moment Emily Davison threw herself in front of the King's horse at Epsom Derby.
The suffragette died from her injuries four days after the horse crashed into her in front of stunned crowds.
Reports are divided over whether the campaigner intended to sacrifice her own life to raise awareness, or whether she just aimed to disrupt the race.
On International Women's Day this footage carries special significance and is seen as a turning point for the emancipation of women in the UK.