Maybe its the paragraph  "holiday that ignores the injustices committed against Native Americans and does nothing to dispel stereotypes about Native Americans." which attempts to place guilt on people in 2016 who have only read about what happened in the US regarding "Indians' from General Jackson on through the late 1900's, and resent being told that they are "guilty' for what their Great -Great-Grandfathers did during that Century?

Frankly, I have trouble feeling "Gulity" about what we did to the Japanese in Eastern Oregon internment camps in the 1940's considering their countrymen were beheading soldiers from Oregon at that time.  And that happened just before I was born, not 100 years before that.