Tim Keller takes a stab at that hot-button question in this short article. The article's main focus is to develop a Christian way of thinking about work. I found the first paragraph to be especially insightful and challenging:
I am often asked: “Should Christians be involved in shaping culture?” My answer is that we can’t NOT be involved in shaping culture. To illustrate this, I offer a very sad example. In the years leading up to the Civil War many southerners resented the interference of the abolitionists, who were calling on Christians to stamp out the sin of slavery. In response, some churches began to assert that it was not the church’s (nor Christians’) job to try to ‘change culture’ but only to preach the gospel and see souls saved. The tragic irony was that these churches were shaping culture. Their very insistence that Christians should not be changing culture meant that those churches were supporting the social status quo. They were defacto endorsing the cultural arrangements of the Old South.