As a landlord I would want to know if illegal things were going on inside my rental units. I put in my leases that I will not tolerate illegal activity and if it goes on the tenant will be evicted right away. Landlords have no control how their tenants drive or what they drink before or during their car ride.
I would call your landlord and explain what you are seeing. Ask if they have another unit in another building and/or what you can do to break the lease. Some management companies will let you break it if they have someone else lined up (like a waiting list). I would not introduce myself in uniform or plain clothed to the neighbors (you or your hubby), I think that is asking for trouble. If someone were to get in trouble with the law they will blame you and you don’t want to be involved in any way with these people.
If you can’t move then just keep to yourself and start learning the areas before you move again. I would be sure to let the landlord know which tenants are breaking the law so that they can decide if they will renew those leases. Just an FYI some landlords don’t care what people do inside as long as they get paid each month.
When I was a tenant I did get a neighbor evicted. The father (adult) rented the apartment for his teen son and they were trashing the place (the dad lived somewhere else). I called the landlord and had him come to the building. He saw for himself what was going on.