More than 1,000 demonstrators today called on the Government to stop allowing the US to use Shannon Airport for military stopovers.
Protesters from across Ireland gathered outside the Limerick airport to voice their concerns about the practice.
Labour TD Jan O'Sullivan said it was vital the issue remained in the public consciousness.
Ms O'Sullivan said: "Today's demonstration is part of a wider global peace rally with large protests taking place in major cities across the world.
"It reminds us once again of the ongoing illegal occupation of Iraq by the US and gives us the opportunity to express solidarity with the Iraqi people.
"We need only look at our newspapers and televisions over the past couple of days to see the shocking images from Basra about the toil this occupation has taken on human life on both sides of the conflict."
Ms O'Sullivan said Labour supported the call by the Anti-War Movement to end the passage of US troops through the airport en route to Iraq.
She added: "In particular, it is shameful that evidence that illegally held prisoners being transported to Guantanamo Bay are travelling via Shannon, is being ignored by the Irish Government."
The Limerick East TD also condemned figures unearthed by her party which claimed the Department of Transport has paid 10 million euro since 2000 for flight charges in respect of foreign military aircraft passing through Irish controlled airspace.
Ms O'Sullivan said: "It is almost certain that the overwhelming majority of these aircraft were US military flights.
"It is bad enough that we should be allowing US military flights to use our airspace and to land at Shannon, but it is totally unacceptable that the Irish taxpayers have have to foot the bill.
"I am calling on all opponents of the illegal invasion of Iraq to pressurise the Irish Government to cease their compliance in the illegal occupation of Iraq."
The protest was also backed by the Green Party who called on Foreign Affairs Minister Dermot Ahern to end Ireland's compliance with the US war effort.
"Not only is the invasion and occupation of Iraq illegal but Shannon continues to be used as a tool of terror and torture as detainees are spirited away via Shannon to hell holes like Guantanamo Bay where the writ of the United Nations does not run," Green Party chairman John Gormley said.
"Surely it is time for Ireland to now reconsider its assistance to the American war machine in light of this tragedy.
"We alone of the so-called neutral states are giving our airports and airspace to the US military.
"In aiding and abetting the Americans in this way we will be seen as a `legitimate' target for Islamic terrorist organisations," the Dublin South East TD warned.