In Louisville, KY, an annual interfaith service memorializes the previous year's victims of violence and cares for the survivors of that violence. Representatives of the police, survivors and religious traditions come together so that the impact of violence is marked and care is shown.
The February 23 2014 service marked the year 2013. A 35 minute video of the service was created by Stephen M. Taylor and posted to YouTube. Its link is here.
May you find it helpful either personally or as a model for what cities and towns can do.