Tens of thousands took to the streets of Baghdad on Friday under clouds of teargas to demand the removal of the elected government in the biggest protest movement in Iraq since the fall of Saddam Hussein. The city's Tahrir Square was a chaotic scene of flag-waving demonstrators battling with security forces, while tuk-tuks ferried off wounded dissenters as riot police fired teargas.

Amnesty International this week accused Iraqi security chiefs of using military grade teargas – up to 10 times more powerful than that typically used for crowd control – to try to quell the unrest



