Giving closing submissions in Rory James Constantino's trial on Monday, crown prosecutor Leon Apostle urged the jury to use common sense about what actually happened when police attended the accused's southwest Sydney home on June 11, 2019.
The officers arrived at the Sadleir house at around 6.40am with an arrest warrant for Constantino's father Ricky over a firearm offence.
Constantino claims he did not know the two men dressed in plain clothes were police. He says he was acting in self-defence against men who busted down his door and chased him through the house.
Mr Apostle called this story "absolute nonsense", saying the 30-year old would not have opened the door to his family home and then merely chatted to those outside if he thought they were a threat.
"People don't open doors to thugs, people don't converse with thugs and tell them that dad is asleep," Mr Apostle told the jury.
"That is a ludicrous suggestion and quite frankly, ladies and gentlemen, it's an insult to your intelligence."
Constantino faces one charge of recklessly wounding Senior Constable Jacob Vella by stabbing him in the neck with the makeshift bladed spear.
The Downing Centre District Court jury was ordered to find Constantino not guilty of two further counts of wounding Sen Const Vella to prevent the lawful arrest of his father and of recklessly wounding the officer with the intention of causing actual bodily harm.
Despite his claims he thought his home was being invaded, Constantino knew the two men were police but was being combative, aggressive and defiant in trying to prevent them getting to his father, the jury heard.
"The accused, on the crown case, was angry. He'd dug his heels in," Mr Apostle said.
Constantino ran straight to his room, grabbed the spear, turned 180 degrees and attacked Sen Const Vella, the jury was told.
The other officer who visited the home, Senior Constable Grant Koschel gave evidence he had shown his badge twice and that, despite being in plain clothes, had his firearm and handcuffs clearly displayed on his waist.
After seeing Ricky Constantino armed with a baseball bat inside the premises, the police officer drew his gun, ordering him to put down the weapon and did not see the moment his partner was stabbed.
Sen Const Vella chased Rory Constantino through the house, mistakenly thinking he was pursuing the father who was resisting arrest.
Mr Apostle said "lifestyle choices" such as going to sleep when the sun came up could have made the accused look older than he was, leading to the confusion.
The trial continues.
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