She's done it so many times that it takes Chiara Cassurino only a few minutes to get ready. She'll strap on makeshift body armor fashioned from a cut-up foam mattress, don a gas mask and goggles, top it off with a construction worker's hard hat — and hit the streets.

Cassurino is one of tens of thousands of protesters set to take part in demonstrations on the sidelines of a summit of the world's big industrial powers — the latest such gathering to be targeted by marchers loosely grouped under the banner of the anti-globalization movement.

Most of the protesters say they want to make a point — peacefully — about forgiving Third World debt, reining in giant corporations, improving workers' conditions, or another in the constellation of left-leaning causes associated with the movement. But others girded for a violent confrontation.