The Katter’s Australian Party were ambushed at Queensland's Parliament House on Thursday after inadvertently holding a press conference next to university socialists.

The politicians stopped mid-speech and confronted the student protesters, which then turned into an ugly screaming match in full view of the attending media and members of the public.

KAP federal leader Bob Katter confronts Socialist Alternative protesters at the gates of Parliament House in Brisbane. Credit:Dan Peled - AAP

The angry QUT Socialist Alternative members shouted anti-racism chants at the politicians and accused them of being a threat to Australia.

"Open the borders, close the camps, free the refugees," they yelled.