In Iran, protesters have been clashing with security forces. Iranians have been taking to the streets to oppose an unexpected 50 percent hike in petrol prices. This measure is the latest sign of pressure on the country's economy after the re-imposition of US sanctions. Meanwhile, authorities have imposed a near-total internet shutdown in a bid to stifle the protest movement. For more, we speak to Mahsa Alimardani, Iran programme officer at the human rights organisation Article 19 and a specialist in Iran's security and internet policy.