It's understood the men came from the back of the room as the meeting was set to debate a motion condemning Trump's temporary ban of refugees from seven countries.



“There are just under 2,000 members of the NSW Young Liberal party and I know everyone,” said one witness who did not recognise the men.



“Everyone is shaken up. No one is laughing this off. This is serious,” a young Liberal said.



“They were complete randoms. This is so unfair that we are goIng to be tarnished by them.”

NSW Liberal party director Chris Stone released a statement saying the party will investigate the incident.

"The identities of the protestors were not known to those present at the meeting. The meeting was immediately adjourned and the protestors ejected. An investigation into the incident will be undertaken," Stone said.

"The Liberal Party strongly condemns the highly offensive nature of this protest."