I saw it with my own eyes - they fired directly into lines of protesters, and people fell where they stood. Omid's voice was shaking as he spoke, fearful of being traced. Breaking the wall of silence between Iran and the rest of the world takes immense courage, given the risk of reprisals by the authorities.


Omid, in his early 40s and whose name we have changed for his safety, has been protesting on the streets of a small city in southern Iran over the past few days against worsening economic hardship. He said security forces had opened fire at unarmed protesters in his city with Kalashnikov-style assault rifles.


We are fighting a brutal regime with empty hands, he said.


The BBC has received similar accounts of the crackdown by security forces following the widespread protests across the country last week. Eyewitnesses reported severe violence as security forces moved to suppress demonstrations that have swept through Iran.


Witnesses described a chaotic scene where protesters raised their voices only to be met with deadly force. A young woman from Tehran noted that last Thursday felt like the day of judgement.


As protests persisted, many felt compelled to join public demonstrations after exiled leader Reza Pahlavi, the son of the last Iranian Shah, addressed the nation. Following his call, protests reached critical levels and were subsequently met with the deadliest confrontations yet.


Despite calls for restraint from international figures, Iranian authorities have doubled down, blaming foreign adversaries for instigating unrest while validating their use of force against what they describe as rioters.


Reports from human rights organizations indicate at least 648 protesters have been killed, though local sources claim the actual number could be far higher. Meanwhile, videos surfaced that starkly depict the consequences of the violent crackdown and the grim situation facing protesters and their families.


With internet access severely restricted and the international media operating under constraints, accurate information remains difficult to verify. Nonetheless, the situation bears witness to the unwillingness of the Iranian government to accommodate dissent, continuing the cycle of violence and repression as protests unfold.