The Boy Scouts have a long history of Cultural Appropriation and Teaching children to Stereotype Native Americans..

under the guise of "honoring" and "admiration." 

At the time of the images below, it was still thought that indigenous people were vanishing. Those who existed on reservations were subjected to agents, permits needed to leave the reservation, and a lack of citizenship rights because they were still deemed "wards of the government." They were in limbo. Society loved the images of them in headdresses and wielding tomahawks, but "real Indians" and their treaty rights, human rights, and rights as citizens didn't matter. 

The Boy Scout's played into the "Noble Savage" image of the Hiawatha romanticized era. The scouts were whites-only, as were the Order of the Red Men who did the exact same thing - but as adults. 

These people "played Indian"... THEIR version of what an Indian was; not as a person now, but as the person whom they were remembering. 

And it is true, that some actual "real life Indians" participated in the cultural appropriation and cultural cannibalism of their own people, but I believe the reasons were varied. For some it was a means of making an income, others wanted to truly share their traditions with those who were anxious to learn, but I suspect many were basically Show Indians (or wannabe Indians of no Native blood) who made their living off of entertaining the masses. They enjoyed the attention, the publicity and the showmanship of being center-stage at events, while teaching adults and children about their culture (and the culture of other tribes.) 

Others were, honestly, sell-outs, who profited from selling their customs and secrets to people outside of their tribes, all for their own financial and career gain. 

Whether they knew, or not, that not all Native people agreed with that they were doing is unknown. But some of them created a business of cultural appropriation that continues today. 

1923, April 18 Press and Sun Bulletin 

1930, Jan 9 The Oshkosh Northwestern 

1936, Aug 2 Democrat and Chronicle 

1937, May 16 Democrat and Chronicle 

1940, July 7 Hatford Courant 

1944, April 17 Oakland Tribune 

1946, Oct 25 Chicago Tribune