Protests have broken out in at least 17 of Iran's 31 provinces, presenting the largest challenge to the country's clerical establishment since 2022, a BBC Verify and BBC Persian analysis has found. The BBC's analysis of protests includes only those for which we have verified video footage - the true number is almost certainly far higher. Reports indicate that protests have also emerged in an additional 11 provinces. The unrest began on December 28 in Tehran, triggered by a significant devaluation of the Iranian currency. Since then, videos have surfaced showing demonstrations in more than 50 towns and cities, even in areas previously thought to be loyal to the state. Over 100 verified videos depict the scale of the unrest, significantly challenging the government, particularly since the Women, Life and Freedom protests in 2022. Experts highlight that the protests have evolved into expressions of discontent against the Supreme Leader and the ruling clerical regime, exacerbated by calls for better economic conditions. Additionally, while authorities initially showed restraint, there has been a noticeable increase in violence towards protestors, raising concerns about potential further escalations and the government's response strategies.