Major Iranian cities were gripped overnight by new mass rallies denouncing the Islamic republic, as activists on Saturday expressed fear authorities were intensifying their suppression of the demonstrations under cover of an internet blackout. “The determination on the streets of Iran and across the country is unprecedented... this is really essentially people fighting for their lives, feeling they have nothing to lose,” said Azadeh Pourzand, Senior Fellow at the Centre for Middle East and Global Order, noting the extreme fragility of the Iranian regime.