America's Secret Service has released a study showing the growing terrorism threat posed by women-hating men like Plymouth killer Jake Davison.
The US Government today released their report showing how since 2014, attacks inspired by the "incel movement" have left dozens dead.
Men who call themselves "anti-feminist" or "involuntary celibates" are seen to draw motivation for violence from their inability to develop relationships with women.
The 26-page report found that early intervention and behavioural threat assessments could be the difference between life and death for females targeted by the growing ideology.
The study concluded that while "there is no one profile of an individual who plans or executes an act of targeted violence," police must consider potential victims when seeking to prevent attacks.
It found suspects routinely "explore multiple targets during the planning process, before making their final selection."
The US Secret Service's National Threat Assessment Centre explored several murderous sprees, including that of Brit Elliot Rodger.
In the 2014 Isla Vista killings, the 22-year-old killed six people and injured 14 others in a shooting, stabbing, and vehicle ramming spree near the University of California, Santa Barbara campus.
Three women were shot outside of a house.
Before executing his deadly attack, Rodger published a woman-hating manifesto online and blamed his rejection by women for his feelings. He later took his own life.
Since his death, London-born Rodger has risen to become a hero of the incel movement.
Just days before Davison committed Britain's worst mass shooting in more than a decade last August, he ranted at a 16-year-old girl that "women are arrogant and entitled beyond belief".
The 22-year-old told an American teenager on a subreddit forum that he was "bitter and jealous" and that women "treat men with zero respect or even view them as human beings".
In the online messages posted days before he killed five people, including his mother and a three-year-old girl, Davison's adherence to "incel" culture was evident.
Davison killed himself after turning his gun on himself.
