WPA murals are a fabulous window into American art and culture of the time. 
They adorn post offices, hospitals, high schools – public buildings all over the country. Some of them contain messages everyone can agree on, but the one at the EPA headquarters in Washington, D.C. is a tough pill to swallow. Even if white/Indian relations were not a political sore spot, a Guernica-style massacre is hardly the decoration one might want in a government office.
So, waddya think? Leave it up? Knock it down?. Wouldn’t that be revisionist history? Or…
(from ***Dave)
I say leave it up. put a brass plate explaining how things were and the reason behind the “art” let the viewer make up his/her own mind. assuming the future Americans can still do that. If we take away everything they won’t be.
I think it should be left up, especially if it’s true to what things were really like back then.