"What are the requirements that governments may reasonably impose upon citizens, and how far do they extend? By appeal to what authority can moral dilemmas be solved? These questions take us directly to the ethical foundations of civil discourse. If the moral principles underpinning the democratic proces are themselves determined by nothing more solid than social consensus, then the fragility of the process becomes all too evident - herein lies the real challenge for democracy."
Our choice is the choice of the Gospel parable to build our house on sand or on rock. If society is built on the sand of social consensus, then the worst human atrocities are possible and even inevitable. If it is built on rock, then it will weather the storm of changing fashion.