Murals in Schools-- Can they be regulated?

I saw this article in the New York Times that was about how there were these murals made in some schools the depicted the ugly history. The questions now are should they go? 
"Around the country in recent years, people have been questioning historical representations in public art. Confederate statues and monuments have been dismantled. And in September, San Francisco city workers removed a statue symbolizing the Catholic Church’s mission-era subjugation of Native Americans. But the Washington High frescoes present a different issue. What they symbolize is open to interpretation. Some see a subversive message about Washington’s failings; others see his glorification."  
Some people think that the painting should be taken down as they do not represent history they want to show and how it is whitewashing the history books but other people do not mind it as they think the murals start a conversation so that they should stay up. This debate whether they are going to be covered up or not is still going on but as we are thinking about public art, I thought this is a good example of how a piece of art can start a good conversation without being interactive. 

Here is the article if anyone wants to read it -->  https://www.nytimes.com/2019/04/11/arts/design/george-washington-murals-ugly-history-debated.html

- Courtney