Look Im a native american which doesnt make me a spokesmen for all native americans.
Personally, I dont think that colonizations representation of European historical writtings is racist. What I do feal, though is that the natives are many times underrepresented.
Whats racist is some of these simple stereo types that were written in the removal years (as redoric for removal) after & against the facts by people that were selling a book, & didnt know nothing, and Pawnee Bill esc shows. A view that all natives are so simple, even stupid thats racist. These viewpionts and really modern public opinion was based on this rederic instead of the history.
Also its worse to cover it up, than talk about it. Read the history, about the Iroquois & the back story of the Beaver wars. The Cherokee, Creek conferacy, all complex factions in the Americas. There were different sizes of native factions, small, medium & large just like the rest of the world.
There are also two other factions in America that I will discuss that I feal are a product of these claims. One faction we'll call them the Democrats

portray Nduns as mythical wood elfs, taking some of our customs & traditions & turning them into jelly. Wearing wild trade things you guys probably associate with natives, that are in the upmost sense of the word generic. We are almost not indian enough for them

Not like real people, like last time I checked we are. People with flaws, many, just like everyone else.
Then you've got another faction lets just say the Republicans

(
a tiny sliver of) that are racist & try at ever turn even to this day to destroy us & all meaningful & real history of our peoples.
To me there is no reason for guilt. This wasnt ancient history though, & youve got to realize that there are deep bruises to our familys that are clearly evident today.
At the same time that doesnt mean saying off the wall racist stuff is cool either. You do that & your propogating that set of ideals.