Romeo and Juliet is usually portrayed as a classic story about two lovers, who fall in love from the first glance and will do anything for each other and it is, not trying to deny that, but it is also a story about rivalry between two families, who don’t even know how their rivalry started, but what they do know is how it went and all the losses that each side has suffered.
It is always implied, that Montague’s and Capulet’s rivalry is what interferes with Romeo’s and Juliet’s love, but never that their love is one of the main causes of the continuation of their families rivalry. The story makes Tybalt look like a villain, but all he does is tries to protect his family’s honor, when Romeo invades their party without an invitation, Tybalt tries to protect his cousin from their enemy. Then there’s Romeo, who knows this relationship wit Juliet isn’t going to work and will only bring more of the unnecessary violence between two families, but still proceeds to continue their relationship with Juliet after discovering that she is a Capulet. As expected Tybalt doesn’t let it slide and even though Romeo doesn’t want to fight him, Mercutio doesn’t understand the idea of peace between two famillies, Romeo and Juliet had in mind when they were getting married and he challenges Tybalt to a duel instead in which he dies and then Romeo kills Tybalt, who was only trying to protect his family from the enemy, while careless Romeo was only thinking about himself and his desires. He could’ve easily prevented all those deaths, if he would’ve restrained himself and his desire for love, once he found out that Juliet is a Capulet.