As a teenager I wouldn't want to walk by it several times a day on my way to class, no.
I also wouldn't put up depictions of Auschwitz in a school hallway in Berlin either. That wouldn't mean forgetting anything, or whitewashing it. I would expect plenty of class material on the reality of such terrible events, including the treatment of indigenous people.
You also have to recognize that most of the works are an homage to Washington, you'd have to be an unusually observant teen to pick up on the difference between glorifying the slaughter of Indians and criticizing it based on the color palette used to depict those colonists.
There's a fine line between a reminder and shaming people whose ancestors committed such acts, or enraging people whose ancestors were the victims of such acts.