Two teenage neo-Nazis, linked to a group that called Prince Harry a "race traitor" for marrying Mehgan Markle, are facing jail after admitting terror charges.
Polish national, Michal Szewczuk, 19, admitted two counts of encouraging terrorism and five of possessing documents that could be useful to a terrorist, when he appeared at the Old Bailey.
His co-defendant, Oskar Dunn-Koczorowski, 18, had previously pleaded guilty to encouraging terrorism.
The charges relate to a neo-Nazi group called the Sonnenkrieg Division, which posted extreme racist material on the GAB social media platform.
In one post, a picture of the Duke of Sussex was set against a swastika with a gun pointing at his head and the slogan: "See ya later, race traitor!"
The group is an off shoot of the American Atomwaffen Division, which encourages terrorism and worships Adolf Hitler and Charles Manson.
Szewczuk, who used an online pseudonym, posted comments that called for the "systematic slaughter" of women.
He also pleaded guilty to five charges relating to the possession of bomb making documents and other extremist terrorist material.
At an earlier hearing, prosecutor Jessica Hart described how Szewczuk and Dunn-Koczorowski had shared the Sonnenkrieg Gab account, with both posting from the same account at different times.
Judge Rebecca Poulet QC warned both teenagers they could face custody when they return to court for sentencing on 17 June.