Are the arts dangerous?

Through the questions about the arts on this site, we hope to inspire Web visitors to reflect on their personal responses to art and the context of those responses. Some of those questions may spur debate as well. In this forum we invite you to share and discuss responses to selected questions.

Must art in public spaces be acceptable to everyone?
Have you ever been deeply offended by looking at a piece of art?
Has anyone ever been hurt by the arts?
Are there any works of art that should always be banned?
Has artistic expression ever changed the world?