There are many benefits of community policing. Let me name some of the greatest benefits.
First, the greatest benefit will be a safer community. There can be no price tag on this one. A safe community is needed for life to thrive. So, if greater safety is the only thing you get, this alone is worth it.
Second, as you seek to watch the community, you are able to build a better relationship with the police. This, too, is a great point. Moreover, working together, again, creates for a safer community.
Third, as you seek to better the community, you get to know your neighbors. In this way, there will be true community. One of the unfortunate things about modern society is that we do not get to know each other all that well.