Why is Tybalt to blame for the deaths of Romeo and Juliet?

is the
embodiment of the hatred that has long existed between the Capulets and the Montagues. Even
Capulet himself has to restrain the hot-blooded Tybalt when the young man recognizesat the
Capulet party (wherefirst meet). This encounter causes Tybalt to bear an insatiable grudge
against Romeo, which leads him to the fight that, it could be argued, leads directly to the
deaths of the two lovers.

In the first scene of Act III, Tybalt encounters
firstand , and then Romeo, in Verona. The Capulet has been looking for Romeo in order to gain
satisfaction for the insult he gave him by attending the Capulet festivities in secret. He
challenges Romeo to a duel, calling him a "villain." When Romeo, having (unbeknownst
to everyone involved) just married, refuses to fight, Mercutio jumps in, decrying Romeo's
"vile submission," and Tybalt kills him, in part because Romeo restrained Benvolio
while they were fighting. When Tybalt returns to the scene,...