Why Do They Lie To Us? Native American Enslavement

I read a piece published by the New Yorker yesterday, February 26, entitled "The Hidden History of Native American Enslavement" by Geraldo Cadava.  While the facts set out in the piece may be correct, the article overall is a deception because it gives the impression that only Europeans (it focuses on the Spanish) were involved in the enslaving of Native Americans with no mention of the various Native American tribes involved in the slave trade; particularly the Comanche that built a powerful empire based on slavery, the horse trade, and trade in firearms. The article also fails to mention the efforts by the Catholic Church and Spanish authorities to purchase enslaved Native Americans from the Comanche and free them.