Answer:
No, death of Mercutio does not seem to be justified.
Death of Mercutio can not be justified because his death was accidental.
Neither Tybalt's death seem to be justified.
Explanation:
Romeo and Juliet is a Romantic Tragedy written by William Shakespeare.
In Act 3, Scene 1, of the play, in a feud between Tybalt and Mercutio, Mercutio was killed accidentally by Tybalt. Tybalt and Mercutio entered the sword fight after Tybalt continues to instigate Romeo for fight and Mercutio, being hot-tempered, challenged Tybalt for the feud. To stop the fight, Romeo enters the feud and in this, Tybalt's sword escapes Romeo's arm and stabs Mercutio to death.
So, this shows that Mercutio does not seem to die and his death can not be justified as his death was an accident.
Death of Tybalt also does not seem to be justified as he was killed in anger by Romeo to avenge the death of his friend, Mercutio. After killing Tybalt, Romeo also seem to realize that he should not have killed Tybalt.