1. Ashura: 50 Years in the Making

The main reason the massacre of Ashura took place is because the likes of Yazid were in power. The question that arises is, how was it that such an individual, who was from the Bani Umayyah, was sitting in the place of the prophet (s) as caliph? Hadn’t the prophet (s) warned the Muslim nation that the Bani Umayyah are to never rule over the Muslims? What happened and what went wrong?