Note:
I swapped the original article at the request of a mod to from a source deemed more reliable, but to avoid confusion when reading the comment section prior to this edit, here is the link to the original article. I chose the Relief Web source listed by some who commented. Cheers!
This is simply not true. Plenty of natives fought against other natives, whether independently, or with US troops, or for bounties.
Those were generally clashes between different tribes. Hamas is doing internal political oppression, brutalising political opponents etc.