Um. The painting isn't for YOU, it's for American Muslims. The image in the artwork - and just the fact that it IS art is extraordinary, since strict Islam represses any creativity, showing this man has thrived in freedom and appreciates it - is a cultural icon. He's got President Bush depicted in a way that Muslims can culturally relate to. Very 16th century. But powerful for the audience it was intended for.
What I'm getting at is that it serves nobody loyal to any religious faith to go about showing works of art which promote the very sickness within the nation of Islam. That painting could just as well have saddam on the horse with Bush senior with his head severed. He probobly got the idea from the side of some building in Baghdad or Tehran.