Again, it is important to see what the senior scholars of Syria say regarding the matter. The Al Saud ruling dynasty and their fataawa committee has no jurisdiction in Syria and is not credible in matters affecting the situation of muslims in any state other than Saudi. Yes, some Ashab (Ra) and Tabi'een did rebel against the Umayyad leaders after Muawiyya and armies were sent by Marwan and then his Abdul Malik to neutralise them - this was a trajedy in which many Muslims were killed. But remember, others like Ibn Abbas (Ra) excepted rule from Umayyad leaders, like Abdul Malik, over that of Abdullah Ibn Zubair (Ra) in Makkah. While Abdullah Ibn Umar (Ra) would not involve himself in any power struggle, holding a neutral position. Anas Ibn Malik (Ra) did not rebel against Hajjaj and accepted him Hakim over the east of the empire - dealing with reality and doing the best you can within your limits according to Quran and Sunnah. Fighting only weakens muslims. Allahu A'lam