A recipe for mace and instructions for how to make bombs and guns were allegedly among the items researched by an accused terrorist writing a how-to guide.
Phillip Galea, 34, is standing trial over alleged terror plots against Melbourne anarchist and socialist groups between August 2015 and 2016.
He labelled a member of the Socialist Alliance a "traitor", a Victorian Supreme Court jury was told on Wednesday.
The guide Galea is accused of writing was titled the "Patriot's Cookbook".
"The only way you can strike fear into them was to put something like that out there so that way they realise they're in danger," Galea allegedly told police in an interview after he was arrested.
"I told people to defend themselves, to arm themselves ... but I'd never encourage anybody to commit a terrorist attack."
But prosecutors argued he intended for the document to incite others to act with violence.
"He was writing this as a counter to the effect of the Anarchist Cookbook ... and was doing so in the knowledge it was likely to cause others to commit terrorist offences," Prosecutor Richard Maidment QC said of the guide.
Documents found on his laptop included guides and images of home-made shotguns and body armour.
The mace recipe was marked "not actual mace but does a damn good job on the eyes", Mr Maidment said.
The alleged terrorist planned to include directions on how to destroy Melbourne's union headquarters, Trades Hall, but was told that content couldn't be published, the prosecutor said.
"Now doesn't that give you an insight into what his thinking was?"
Galea wanted to target the city's anarchist club, as well as the Melbourne Resistance Centre and Trades Hall "to eliminate the leaders of the left", the court was previously told.
The accused terror plotter has been in custody since his arrest in August 2016.
Galea's lawyers are due to respond to the allegations on Thursday.
Australian Associated Press