Men deny assaulting Tony Abbott's sister Christine Forster during protest

Two men charged with assaulting Tony Abbott's sister Christine Forster during a heated protest outside a Liberal Party fundraiser have denied any wrongdoing.

Nicholas Dobrijevich, 20, and Christian Quinonez Munoz, 31, have each pleaded not guilty to one charge of common assault at the Downing Centre Local Court today.

Mr Munoz also entered pleas of not guilty to ripping Ms Forster's sports jacket, hindering police and damaging a fence.

It was a demonstration organised by the Refugee Action Coalition Sydney in Eveleigh, which called for the evacuation of asylum seekers on Manus Island.

The event was attended by Liberal MPs Tony Abbott and Peter Dutton, as well as City of Sydney councillor Christine Forster.

Police will allege the protesters tried to punch, shove and spit at Ms Forster as she made her way inside the venue on November 10.

A third man, Matthew Campbell, 21, has also been charged with assaulting Ms Forster's partner, Virginia Edwards.

He too entered pleas of not guilty at the Downing Centre Local Court.

Mr Campbell is also charged with assaulting two other individuals, while a fourth man, Samuel Williams, 24, pleaded not guilty to assaulting police.

At the time of the incident the Refugee Action Coalition Sydney refuted the allegations.

The group posting online, "In contrast to Forster's clearly false allegations, the long-term abuse of asylum seekers presided over by successive Australian governments, and its tragic toll of death, suicide, violence, self-harm, severed families, abuse, despair and broken lives is amply documented."

Mr Dobrijevich and Mr Munoz bail conditions state they must not assault, harass or threaten Ms Forster, and there is to be no contact with her on social media.

All four men said nothing to the waiting media as they left court.

They will face court again in 2018.