I'm looking for mythological examples of loss leading to intense emotional and symbolic displays of grief, whether spontaneous, performative, ritual or some combination of the above. That is, grief so intense that it inspires madness, self-destruction, revenge, or deep penance, any kind of charged and meaningful display, of the sort that within which the participants act as if to say 'look at us now, just look at how terrible our sorrow is'.
As clarifying examples: Isis gathering the body parts of Osiris would not count for this, because while the story both touching and symbolic, I've never read a version where the emotional display of grief itself was brought to the forefront. Conversely, Gilgamesh's grief for Enkidu, the ending of Beowulf, or almost anything in the Illiad, are all excellent examples of what I'm looking for. Loss in this question mostly refers to the loss of a person, but that can be bent to refer to a nation, reputation, treasure, or a hoped-for-future, etc. if the example of grief is strong enough.
Thanks for your time.