This used to be a comment about how all White Americans should protect Indian heritage. Which they of course should, but he also accused all White people of "ravaging" Indian sites etc.
European settlers trashed an entire continent in a few hundred years; stop and imagine what it must have looked like when they first arrived.
How this ends up filed under Camel art is a mystery.
Even if that were 100% true, he was blaming all present day “White Americans”, none of whom were in any way involved.