Once a group of people, be they women, prepubescent, pubescent children, Jews, trans people, take your pick, become objectified, they are considered 'lesser'.
Despised. Tools. Toys. Commodities.
Disposable.
They are scapegoated, fetishised and are 'used'.
Those who believe that, are happy to kill after they've got what they wanted.
The killer of Naomi Hersi didn't believe TWAW, he didn't believe she was a person at all.
Just an item to be used and disposed of.
Just as many killers of women do every day.
Femicide is the killing of women.
As Women's Aid says on their website
"Femicide is generally defined as the murder of women because they are women, though some definitions include any murders of women or girls."