The WOMBLES were a loosely aligned anarchist and anti-capitalist group based in London. They gained prominence in the early 2000s for wearing white overalls with padding and helmets at May Day protests, mimicking the Italian group Tute Bianche.

On 1 May 2004 there was a physical confrontation in the Dublin suburb of Ashtown between riot police and alter-globalisation activists. On that day there was a summit of EU leaders taking place at Farmleigh House in the Phoenix Park. Protestors affiliated with the Dublin Grassroots Network and other left-wing groups attempted to march to Farmleigh but were blocked by Gardaí at the Ashtown roundabout. A small number of protestors broke off from the main group and clashed with Gardaí at the roundabout. The Gardaí used water cannons against the protestors, eventually dispersing them. This was the first time that police had used water cannons in the Republic of Ireland.