The best resource I have found so far has been The Safe Side dvd. It is an entertaining approach that divides the world into three categories: Don't Knows, Kinda Knows, and Safe Side Adults. This was a terrific approach until my children started to really grasp what I have been teaching them about loving others. Now they want to know why our homeless friend, Nellie, can't come to our house. We love her like God says, right? And, is so-and-so's father is a Safe Side adult? Why not?
My children want to put everyone into boxes of "bad guy," "good guy," "friend," or don't know." I am left struggling to explain how we can obey the command to love everyone, yet be safe at the same time. There is no easy explanation. People, unfortunately (or fortunately, depending on your perspective) don't come with labels of friend or enemy. Sometimes they trick us...but I don't want to get into all that right now.
I want my children to love extravagantly...to not judge books by their covers...to be light in darkness...but I also want them to be safe. I am not sure that is possible.
So, I pray for wisdom to navigate these tricky waters. I entrust them to their Creator who loves them infinitely more than I do. I pray for His protection and discernment to surround them and permeate their lives. And then I trust Him to do as I have prayed.