My response to the Freedom From Religion Foundation turned their position on its head. Rather than keeping religious leaders out of politics, we need to keep political leaders out of religion. The tendency for leaders to cross lines is one of the greatest dangers to religious practice.
Steve Matichuk offers a summary of the absolutist Christian position. Essentially, as Christ seeks a universal brotherhood, any celebration of national identity dilutes his message. Steve holds out for some accommodation. My response below:
This is very close to my mind at this point, as I am just working through a video teaching on Revelation 13. In Revelation 12 the dragon (or Satan) is expelled from heaven, and in 13 he plots his dominance of earth by raising up tyrannical governments that are supported by hypocritical religious practices.
On the other hand, in Christian terms some governments are better than others. We should celebrate actions that manifest Christian ideals, while avoiding at all cost the use of government to enforce Christian morality.
As I emphasize in the video, the real battle is in the human mind, which continues to evolve after birth. Beginning with the collaborative experience of nursing, the brain actually develops centers that support socialization, culminating in adulthood with the center responsible for altruism – or what Christians would call “Unconditional Love.”
The holidays that you list are manifestations of many of the virtues listed in 2 Peter 1:5-8. But it is those virtues that should be celebrated – not some abstract ideal like our “freedom.” We are all yoked to God’s purpose, and so none of us should consider ourselves to be privileged with absolute freedom.