If you have the time and inclination, I think you could do worse than spend a while listening to the most recent sermon from the pulpit of Magdalen Road Church. Click here and select the preach (mysteriously listed for the 26th November, and also listing the wrong passage of Scripture - it should be 1 Cor 5:9-13) titled "How to deal with the world".
Here is an Anabaptist manifesto, if you like, for society and the church's role within it. I am convinced. How about you?