I am confused by patriot Americans

In America, why is one’s identify so dependant on the country in which they live? I notice this a lot, especially amongst the right-wingers, fundamental Christians and survivalists. What they do is attributed to some sort of higher calling. These same people tend to be for liberty and freedom. However, they seem to sell out on this by defending that which isn’t tangible, at all costs. Their self and the selves of those around them tends to come second to their country and their God.