What Kind of Public Art Should Replace the Gum Wall? Four Potential Solutions

Looking for an adequate replacement for "the Hepatitis Sea."
Charles’s “good riddance to the gum wall” post from yesterday has enlivened the discourse about public art in a way none of us ever expected. On one side: people who think Charles is an "insane race baiter":
This latest round of insane race baiting coming from the Slog (the "Restaurant Racist" piece is another that comes to mind) has pretty much killed your publication for me. I certainly hope that you will do somethi