Refugee Anzac protest inappropriate: Swan

A rally outside Sydney's Villawood Detention Centre on Anzac Day in support of protesting detainees would be inappropriate, Acting Prime Minister Wayne Swan says.

The Refugee Rights Action Network is planning a demonstration on Monday outside the detention centre where four people are still protesting on the roof after riots in which nine buildings were destroyed earlier this week.

Mr Swan said the rioters' actions could not be defended and the rally would be inappropriate.

"I don't think that's necessarily appropriate at all. There has been unacceptable behaviour by people inside the facility," he told reporters in Cairns on Saturday.

"We cannot, in any way, condone the sorts of acts and behaviour we have seen at that facility in recent days."

Mr Swan refused to be drawn on the police's decision to deny food to the four protesters still on the centre's roof.

"I think the authorities should take every responsible course of action to remove people from those positions. That is entirely a matter for the law enforcement officials."

Federal police have removed 22 detainees believed to have been involved in Wednesday night's fiery riot and Mr Swan on Friday promised those involved would "feel the full force of the law".

However, he has ruled out making any changes to Australia's immigration detention policies until after an inquiry is completed into the Villawood riots and a similar incident at the Christmas Island detention centre last month.