In fact...
In fact, the efforts of the distinguished companion, Abuzar Ghifari, had already created a favorable atmosphere for the success of these speeches and with the arrival of Ahlul Bayt in Syria and with what the people of Damascus heard from them, the memory of Abuzar, who had firmly and openly opposed the deviations of Mu'awiya, was revived.
(Refer to Abuzar Ghifari, ISP, 1984) Abuzar was a very out-spoken, religious and brave person and as soon as he realized that the Islamic Caliphate had deviated from its proper course he opposed and criticized it in the presence of the caliph as well as in the streets and the bazaars. He may be considered to be the founder of such Islamic risings and movements, because he was a companion of the Holy Prophet and enjoyed precedence over others in the chronological order.
Of course, Abuzar was exiled, suffered hardships and died in Rabaza in a state of helplessness, but in spite of all this he never sat still and continued to invite the people to good and to restrain them from evil. After Mu'awiya came in power some other persons continued the task of Abuzar. Abuzar departed from the world but Hujr bin Ady Kindi took his place and said what ought to have been said.
He opposed with great boldness the regime which had declared in the name of Islam the vilification of Imam Ali to be a religious duty and even a condition for the acceptance of worship, and laid down his life in pursuance of this task. Hujr did not reach Damascus and was killed at Marj Uzra, a place situated near that city, but even there he continued to say what he had to say and to defend Imam Ali's right.
However, the words of Abuzar and Hujr bin Ady and his friends could not constitute a sufficient reply to the unjust propaganda of the Umayyad dynasty and caliphate which extended over a period of more than forty years. It was, therefore, necessary that persons belonging to Ahlul Bayt should have met the people of this city themselves and removed their misunderstanding.
They should have furnished a living proof of the services rendered by the distinguished members of the family of Bani Hashim to Islam and the Muslims of the world and also made public the shameful past of Bani Umayya consisting of enmity with the Prophet of Allah and the Muslims.