Culture is an expression of the values of communities, and one could argue that values are a product of religion, when religion is properly defined.  More than how we worship, religion defines reality and purpose, it determines what or who is worthy to be worshipped and served.  From this perspective, culture wars are essentially a battle of competing religions.  What we believe and value affects how we live.  It this is true, then religion can never be a private matter, because it directly impacts every other person in our society through our choices and behaviors.  There is a culture war in Western Civilization over our heritage and what is at stake is liberty and true prosperity.  This relates to what Paul wrote to the Corinthians:

For the weapons of our warfare are not carnal but mighty in God for pulling down strongholds, casting down arguments and every high thing that exalts itself against the knowledge of God, bringing every thought into captivity to the obedience of Christ,” (2 Corinthians 10:4–5, NKJV)

How we think directly influences life on earth, creating a reflection of heaven or hell to the extent that what we think is in agreement with or contrary to truth.  It is also connected to what we love and have a passion for.  Most people are deeply affected by the pain caused by sin in the earth, but they often propose a false savior that they pursue with a passion that can change whole nations.  At the heart of this culture war is the education of our youth, for what they believe and value will become the culture they create.  That is why a classical Christian education from a Christian worldview that aims to develop Christian thinkers and communicators is so important.  Our children need catch the dream of a world ruled by the values and character of Jesus Christ, and have such a clear picture of what that looks like, that they are able to go and infect the nations with that dream.  That sounds like such a monumental task, yet it happens as one person at time catches the dream.  World history, but especially Western history, is the story of the ebb and flow of that dream passed on from generation to generation.  One of the goals of a classical Christian education is to connect our children to that great tradition, and that is why the liberal arts, the Great Books and the Great Conversation are at the heart of our education.  It is our genuine hope that such an education will also lead to real and vibrant faith and relationship with Jesus who is the source of all that is good, true and beautiful.