Conflict in Romeo and Juliet

The most obvious conflict in Romeo and Juliet is the Montagues vs. the Capulets. It is made very clear that they are feuding families at the beggining of the book. Capulet men are walking through the streets of Verona, sharing with eachother how much they hate the Montagues. They soon come across Montague men and one Capulet man insults them biting his thumb. This sparks and large fight in the streets, including Benvolio, Tybalt, and several villagers. This conflict is important because it develops the theme of forbidden love. Romeo, a Montague, cannot be with Juliet because she is a Capulet.
I suppose the modern equivilent of the Montague vs. Capulet conflict would be gangs. My father works in a school district where gang violence is a problem and he has to work with kids who are involved in gangs. These kids are often in gangs because they have a family member involved in the gang. I don't know much about gangs but I do know they act like families or packs and violence is common between rival gangs, much like the conflict between the Montagues and the Capulets.