Who Were the Sea Peoples?

I was reading the letters to the editor in a local paper, and someone wanted to say some "artists" had gone too far. But he had to lead off with the disclaimer, "Yes, I know art is all about pushing the boundaries." Well, I suppose if you have the emotional maturity of a twelve-year-old, maybe it is. I tend to think art is "all about" creating works that will inspire a sense of wonder in your audience. But perhaps I'm just a stick-in-the-mud in thinking that sticking a crucifix in a jar of urine does not really compare with the Mona Lisa.