Watch the moment a protestor enters a bullring; three gored in Pamplona's first 2017 bull run

Be warned that the video is graphic and may be very upsetting.

A video has been released by People for the Ethical Treatment of Animals (PETA) showing the moment someone jumped into a bullring at a bullfight during the San Fermín festival.

The footage shows two members of Vegan Strike Group jumping the wall of the bullring just after a matador stabs a bull in the back of its neck as it lay prone at the end of a bullfight in Pamplona, Spain.