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An image grab taken from a handout video released by Iran's Mehr News agency reportedly shows a group of men pushing traffic barriers in a street in Tehran on December 30, 2017.
Ten people died overnight in fresh unrest in Iran, local media reported on January 1, 2018, despite President Hassan Rouhani calling for calm and vowing more "space for criticism" in a bid to head off days of protest. / AFP PHOTO / MEHR NEWS / Handout / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / HO / MEHR NEWS" - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS 
NO RESALE - NO BBC PERSIAN / NO VOA PERSIAN / NO MANOTO TVHANDOUT/AFP/Getty Images
An image grab taken from a handout video released by Iran's Mehr News agency reportedly shows a group of men pushing traffic barriers in a street in Tehran on December 30, 2017.
Ten people died overnight in fresh unrest in Iran, local media reported on January 1, 2018, despite President Hassan Rouhani calling for calm and vowing more "space for criticism" in a bid to head off days of protest. / AFP PHOTO / MEHR NEWS / Handout / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / HO / MEHR NEWS" - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS 
NO RESALE - NO BBC PERSIAN / NO VOA PERSIAN / NO MANOTO TVHANDOUT/AFP/Getty Images

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    Dashed hopes: Reasons Iran protests kicked off

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Dashed hopes: Reasons Iran protests kicked off

Protests have gripped multiple cities in Iran for the past week, with pro-government protests on the seventh day. CNN's Nick Paton Walsh explains how they started in the first place.

Dashed hopes: Reasons Iran protests kicked off

Protests have gripped multiple cities in Iran for the past week, with pro-government protests on the seventh day. CNN's Nick Paton Walsh explains how they started in the first place.