I think when you get right down to it, it's about Christianity vs secular humanism in regards to lifestyle, religion, politics:
"Summary
An overarching theme given to the world by Christianity is the equality of human beings, and the preciousness and worth of every human life. As put by D'Souza, "This Christian idea was the propelling force behind the campaign to end slavery, the movement for democracy and popular self-government, and also the successful attempt to articulate an international doctrine of human rights. My celebration of Christianity's role in shaping these great social changes comes with a sober corollary: if the West gives up Christianity, it will also endanger the egalitarian values that Christianity brought into the world. The end of Christianity also means the systematic erosion of values like equal dignity and equal rights that both religious and secular people cherish." If securarlism continues to gain, so will the restoration of infanticide, demands for the radical redefinition of the family, the revival of eugenic theories of human superiority, the suppression of freedoms of religion and expression, etc., as well as political tyranny."