That is incredibly sad that history to some is absolute garbage. Historical sites like those need preservation and love to remain standing.
We both agree on that. Unfortunately not everyone cares. I hope these people will see things differently one day, regret what they did and teach their kids some manners.
Sadly people don't like to change unless there's something in it for them. It would take a major city project to clean that up but I'm sure it's not a priority for them.