What should I do about my obnoxious neighbors?

I live in a court of probably 20 town homes. We have some new neighbors who have moved in directly across from us. There are about 5 adults living there though it’s hard to keep track since they have dozens of visitors each day. Not a problem. What is a problem is that they are out until 2 or 3 a.m. yelling at each other. I mean, it’s all day like that, but goes on until the early morning. Sometimes it’s friendly yelling, other times not. They often sit out on their front steps or in the parking lot at noon drinking 40s. I’m not making this up. They leave their bottles behind and throw their bottles and other garbage (diapers, fast food bags, cigarette boxes) into the storm drains, clogging them up and making a general mess of the parking lot and community. They don’t tie their garbage bags on pickup days, so trash blows everywhere and it attracts dozens of crows. Today I was outside playing with my son when the one super scary (and I suspect mentally ill) guy was talking to someone in a car in the parking lot. She drove away, and he walked back toward the house, cursing, and he punched a light post (not his property).

My dilemma. I don’t usually call cops for such things, as I think their services can be better spent elsewhere. I’m thinking it may be time, though. However, I don’t want it to get back to them and make them think this is a racist issue. They are black and I’m white. Most of our other neighbors in the court are also black (there’s one other white man, and 2 Hispanic families- everyone else is black). So, it’s not like I’m singling them out.

I mean, is this a police worthy problem? Or should I wait and talk to their landlady? I don’t see her too often, though, and I don’t know how to get in contact with her. I also don’t know that I would want to talk to them myself because, frankly, I’m scared of them. They’re loud and always drinking and cursing. Again, not to be like the paranoid racist white chick, but if one of the residents or dozens of visitors carries a gun, my family’s safety is an issue- even more than it already is with the aforementioned behavior. How do I handle this in a tactful and efficient way?