I am remarkably unsentimental about modern art.then you have no problem destroying original paintings by Basquiat ??Why do you care? Are images of the founders sacred icons?
How is this different from book-burning?
Book burning is a quaint old custom from when all knowledge was based in book form. Now we practically have infinite copies of everything that exists. I assume the painting has been photographed? As a source of knowledge they will exist for a very long time. As pieces of art murals are practically worthless. The only value of these paintings are in indoctrination. So finally we arrive at the crux of the matter. What are these paintings teaching? Anything that can't be taught elsewhere?
I am remarkably uninterested in your sensibilities AND LACK THEREOF