In the Old and New Testaments we see people of faith who have stood up against the zeitgeist when the zeitgeist had been leading dangerously down the wrong road. That is called the prophetic, the person who stands up and says, look I think we are going down the wrong path here. So today there is a call for the prophetic voice because
a, we have become too consumerist and materialist as a society,
b there is too much inequality with some people making much too much and many people are suffering as a result.
I think to stand up against the zeitgeist is one of the great things Christianity has done. Invite someone to take a closer look at Christ and his church.