Electra tests the bounds of conflicting family loyalty. The title character owes a duty to her dead father to avenge his murder. But, she owes her mother respect. Unfortunately, this question of loyalty is blurred because her mother is the murderer in question. To make matters worse, Electra has a duty to despise her dead sister's killer; unfortunately, that killer is her father. All sorts of drama unfold in this play as different loyalties compete with one another.
The murder of Clytemnestra is wrong because it is matricide, not because it is murder.
The murder of Clytemnestra is wrong because it is murder, not because it is matricide.