The only difference was that their former positions were...
The only difference was that their former positions were limited and weak and their society was isolated in the heart of the desert. But now, thanks to Islam, their new positions made them control a wide part of the world with large regions that were once ruled by the Persian and Byzantine empires. These positions, with all the influence they commanded had fallen into the hands of the Umayyads without any real change having taken place in their thoughts and positions.
These were the bitter facts that were expressed in Imam Husayn’s outpourings on the day of Ashura before the battle: “You have drawn on us the swords which we placed in your right hands and poked against us the fire which we kindled [in the first place] against our enemy and yours. Then you became your enemies’ support against [those who are supposed to be] your friends, without their upholding neither…