Where is the Line?

If you attempt to create art with any degree of seriousness, you will quite quickly crash into some pretty tricky ethical dilemmas. How can we speak to the world we live in and reflect the experience of people who are in the world without ourselves sinning? How can we work together with people who hold very different values to us, whether as collaborators or clients? What is the balance between artistic self expression and integrity and our biblical mandate not to cause our brother to stumble? In short, where is the line?