They need 2 statues. One of Columbus, and another of a Viking looking over his shoulder toward the Columbus statue.
I remember a cartoon from years ago, I think it was Charles Addams but am not sure.
Columbus lands in the Islands, sees a horned Viking helmet in the brush, and tells one of his men..”Quick! Hide that thing!”
There is a statute of Leif Erikson in Chicago as well, but so fare the mob has not called for its removal.