As Esteghlal football team played against Persepolis in Tehran Azadi stadium, fans of Derby football Match-79 clashed with suppressive State Security Forces, SSF, and shouted slogans against state authorities.
The frustrated fans which became very angry as they witnessed barbaric behaviors of the agents started to protest the continued playing of religious songs and tapes using the stadium’s laud speakers. As the protest intensified the frightened agents stop playing their tapes to avoid any further clashes and spread of protest to outside the stadium.