Why does Tybalt seek revenge on Romeo for crashing the party?

recognizes 's voice at the Capulet's masked ball, and Tybalt is infuriated that Romeo, a hated
Montague, would sneak into the event hiding behind a mask. Tybalt considers it an outrageous
violation of Capulet territory, and he believes that Romeo has come to the ball simply to make
fun of the Capulets and cause trouble.

TYBALT: This, by
his voice, should be a Montague.

. . . What, dares the slave

Come hither, cover'd with an antic face,

To fleer and scorn at our
solemnity?

Now, by the...