Recently, there was publication of a DNA study showing that the Clovis people of North America are more closer related to South Americans (i.e. Mayans) than Native Americans. The article titled "The genome of a Late Pleistocene human from a Clovis burial site in western Montana" is available here, but is subscription only.This news is important as it reveals more details about how the Americas were populated by different migrations across the Bering Strait land bridge.
So how does this tie into superstition? Well, this research may have never been published as the Native American Tribe leaders probably would have stopped the DNA study as the spirit of the boy (Clovis Boy, Anzick-1) deserves to be at peace. This, could have been similar to the case of Kennewick Man which resulted in drawn out court cases and delay of publication of important results.
However, the fact is no spirit of this boy can be at rest as the spirit does not exist. I say this, as all research to prove the existence of a spirit has shown there is none. So due to some superstitious belief a very important finding could have never been published. This is just another reason to leave superstition behind and shows how it is detrimental to society at large.