The true story of this incident (not the LIEberal SJW drivel)
Here is the true account of the story that the movie is supposedly based on as told by posse member Lawman Ben de Crevecoeur in 1941.
Willie Boy was a 25 or 26 year old Paiute Indian. Isoleta Boniface was a 15 year old Paiute Indian girl. Isoleta's father, Old Mike Boniface was a Paiute Indian.
Willie Boy had an unrequited interest in Isoleta. Her father didn't like Willie Boy. Willie Boy kidnapped Isoleta the first time from the family's camp at Twenty-nine Palms, Ca. Her father found them, took her back and told Willie Boy that if he came near her again he would kill Willie Boy.
Some days later, after drinking with a White friend, Willie Boy went to the Gillman Ranch, near Banning Ca., where the Boniface family was working and crept up on Old Mike, his wife and their 7 children where they were sleeping under a Cottonwood tree. Willie Boy shot Old Mike in the head as he slept.
Willie Boy kidnapped Isoleta again and headed into the desert. He used her as a pack animal to carry whatever supplies he had. The posse, some of which were Paiute Indians, came upon a message scrawled in the dirt from Isoleta that read, "My heart is almost gone, I will be dead soon". When she couldn't go any further, Willie Boy shot her in the back and killed her.
Lawman Ben Crevecouer said, "The sight of that girl's body was something a person would want to forget, but couldn't. We came on it while it was still warm. Her clothes were just rags, she was welts and bruises all over, and there were cactus spines in her flesh. She had worn through her thin little shoes and her feet were raw and bloody".
The posse eventually discovered Willie Boy's body after chasing him for 11 days and 500 to 600 miles in Riverside and San Bernardino Counties in Ca.. Willie Boy killed himself with his last bullet.
Willie Boy was just a scumbag who murdered two of his own people but ,of course, this director, Abe Polonsky, turns the story into another anti-White Hollywood propaganda film.
This info is from an interview with Ben de Crevecouer in "Desert Magazine", Nov. 1941.