Mourning is, in the simplest sense, grief over someone's death. The word is also used to describe a cultural complex of behaviours in which the bereaved participate or are expected to participate. Customs vary between cultures and evolve over time, though many core behaviors remain constant.
Wearing black clothes is one practice followed in many countries, though other forms of dress are seen. Those most affected by the loss of a loved one often observe a period of grieving, marked by withdrawal from social events and quiet, respectful behavior. People may follow religious traditions for such occasions.
Mourning may apply to the death of, or anniversary of the death of, an important individual like a local leader, monarch, religious figure, family etc. State mourning may occur on such an occasion. In recent years, some traditions have given way to less strict practices, though many customs and traditions continue to be followed.
The Mourning of Muharram (or Remembrance of Muharram or Muharram Observances) is a set of rituals associated with both Shia and Sunni Islam. The commemoration falls in Muharram, the first month of the Islamic calendar. Many of the events associated with the ritual take place in congregation halls known as Hussainia.
The event marks the anniversary of the Battle of Karbala, when Imam Hussein ibn Ali, the grandson of Muhammad, was killed by the forces of the second Umayyad caliph. Family members accompanying him were killed or subjected to humiliation. The commemoration of this event during the yearly mourning season, with the Day of Ashura as the focal date, serves to define Shia communal identity. Muharram observances are carried out in countries with a sizable Shia population.
sasan rashtipour, Iran, Tehran