It isn't simply people who don't believe in God who are directed against Christian values and freedom of expression.
In that case, how can someone pinpoint and describe the influences that are directed against Christian values and freedom of expression?
As interest grows among Christians in protecting Christianity from further decline, more Christians will try to focus on determining which influences are directed against Christianity. A question will arise as to whether it is people who don’t believe in God because people who are vocal about their opposition to Christianity often don’t believe in God. However, there are many people who don’t believe in God who wouldn’t try to suppress Christian freedom of expression.
There are also people who don’t believe in God whose values are similar to Christian values. In that case, how can someone pinpoint and describe the influences that are directed against Christian values and freedom of expression? One method is to describe the influence by what it does. Consider an influence that tries to prevent Christians from speaking in public places where others have a right to share their views. Also consider someone who slanders Christian values on the news. In both cases, the influences are anti-Christian because they are directed against Christianity. Instead of talking about people who don't currently belief in God as inimical to Christianity, it is more accurate to talk about anti-Christian influences. It is not all people who don't believe in God who harm Christianity but instead influences such as the previously mentioned.
There are also other kinds of influences that harm Christianity as well. It is useful for Christians to pinpoint and describe harmful influences. This allows them to develop a more accurate and sophisticated dialogue around protecting and promoting Christianity.