(٢) It is difficult to assess the nature and extent of the persecution of the Muslims in Mecca. There was little physical violence, and that almost always within the family. Muhammad suffered from minor annoyances, such as having filth deposited outside his door. The persecution is said to have led to the emigration of some of the Muslims to Ethiopia about, but they may have been seeking opportunities for trade or military support for Muhammad. Some remained until, long after Muhammad was established in Medina. Whatever the nature of the persecution, the Muslims were very bitter about it.