The lifestyle of those people who reject or oppose the dominant values and behavior of society. The beatitudes are counter-culture because they are different then what mainstream society is doing. An example of this is in the beatitudes. The first one is: blessed are the poor in spirit for theirs is the kingdom of heaven. Poor in spirit means to be lacking religious awareness. Receiving the kingdom of heaven though you don’t know about religion is a miraculous thing.
Being Christian means believing in Christ, Jesus and God. Being Christian, we are often forced to take paths that the rest of society are not taking. This makes us Christians counter-culture by going against society. Often Christians aren’t doing for the attention of society, rather to follow the callings of Jesus.