The residents I have found respond to a call to action when there is something that is compelling. I normally held what I called little town hall meetings. I would put out fliers later in the computer age I used them as well to put something out that would draw the tenants out. Something which if they were not there said that they did not care or did not have children for instance if it involved the children as it does in this case. My meetings were all known as, "A Call to Action"! In this case I would have a line, "If You Care About Your Children and Their Welfare". We are telling the parents if they do not show up they do not care, but we have not put it into words. Parents know each other and those that do not show up will get the information from their friends that do show up. Those that just skipped out are embarrassed into showing up next time and those that have to work will have a way of finding out as well, through your community information lines.
I found the best call to action when it is not one where it is directed and people are told what they will do, but to facilitate, present the problem and ask for some ideas from the community. The first couple of times maybe slow and may not give you the immediate progress but stick with it as there will be those who come to see if it is even worth it to come.
Just like in some communities they have neighborhood watch programs; it can be started locally as an example.
We have even been sneaky and had little private rewards for information leading to the arrest of people that have done damage to our properties and it has been successful. We did not go in and handle it, but turned it over to the legal folks as persons of interest.
Heck give an old WWII or Vietnam vet the challenge and they will go in there and square it away in a heartbeat! Hey, I was not serious, just making a little fun there!