An excellent post from Kevin DeYoung. His conclusion:
In some parts of the church, every hint of patriotism makes you a jingoistic idolater. You are allowed to love every country except your own. But in other parts of the church, true religion blends too comfortably into civil religion. You are allowed to worship in our services as long as you love America as much as we do. I don’t claim to have arrived at the golden mean, but I imagine many churches could stand to think more carefully about their theology of God and country. Churches should be glad to have their members celebrate Memorial Day with gusto this Monday. We should be less sanguine about celebrating it with pomp and circumstance on Sunday.