The underlying issues of inequality, corruption and poverty are still dogging the region, ten years after the protests.
Iraqis have taken to the streets to protest against the foreign interference – by both Iran and the US – in their country.
From Chile to Lebanon and Iraq to Hong Kong, the same masks have become a common language to register dissent.
Why young Iraqis to took the streets in protests that left more than 100 people dead after a brutal suppression.
Protests seem contagious when they erupt in several countries at the same time. But new research shows that unrest rarely spreads. It's protest symbols, like France's yellow vests, that go global.