Noisy neighbors...not sure what to do?

We seemed to have had constant issues with our next door neighbors and I think we and management are are their wits end. Just last month one of our neighbors came to our door after a fight and all covered in blood asking us to call the police for him...this is while our children were awake too! Every night they also throw these loud parties were they just stay outside screaming and slamming doors and its just driving us crazy! Tonight was the drawing line because it woke up our children so I finally called the police to make them be quite....only for them to finally shut up about 10 minutes after I called. I really do not want to be known as the snitch neighbor but I do not know what to do because my children and us all really need our sleep! Did I do the right thing and what else can I do if this continues?