A student, 22, who called for Muslims to be “wiped off the face of the earth” in a Facebook rant is facing jail.
Louis Duxbury made the 17-minute "call to arms" video shortly after a series of terror attacks in 2017.
A social media user at York St John University, where Duxbury was an undergraduate, saw the post and reported it to the police.
Giving evidence at his trial last week, Duxbury claimed he was exercising his right to free speech.
However, a jury at York Crown Court on Tuesday found him guilty of inciting religious hatred after deliberating for only half an hour.
The Recorder of York, Judge Sean Morris granted the 22-year-old bail until November 29, when he will be sentenced for the offence.
He warned him: "People who incite religious or racial hatred create terrible trouble for our society. It will be a custodial sentence."
The court heard Duxbury was first reported to police about his far-right views as a 15-year-old schoolboy in 2015.
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Teachers reported him for an inflammatory anti-Islam comment he posted online following the murder of Fusilier Rigby, it was heard.
Giving evidence at his trial, Duxbury claimed that the 2017 video was a “rant”, adding he believes in a diverse, multi-cultural society.
He claimed he was only talking about extremists and terrorists and not Muslims in general and that he was neither racist nor fascist, claiming he was apolitical.
Defence barrister Glenn Parsons said he could say little in mitigation, but asked for Duxbury to have time to set his affairs in order.