From Bourke (paraphrased): "In the history of humans on this planet, no single culture holds a monopoly on cruelty to their fellow man."
From the many books, articles, and other documents, I have only come across on instance of an Apache raping a non-Indian.
"I do not wish to be understood as in the least palliating their crimes, but I wish to say a word to stem the torrent of invective and abuse which has almost universally been indulged in against the whole Apache race. This is not strange on the frontier from a certain class of vampires who prey on the misfortunes of their fellow-men, and who live best and easiest in time of Indian troubles. With them peace kills the goose that lays the golden egg. Greed and avarice on the part of the whites—in other words, the almighty dollar—is at the bottom of nine tenths of all our Indian trouble." General George Crook, in a candid letter to his superiors
From John Bourke: "[At Camp Verde] the prospects of the Apaches looked especially bright, and there was hope that they might soon be self-sufficient; but it was not to be. A “ring” of Federal officials, contractors, and others was formed in Tucson, which exerted great influence in the national capital, and succeeded in securing the issue of peremptory orders that the Apaches should leave at once for the mouth of the sickly San Carlos, there to be herded with other tribes. It was an outrageous proceeding, one for which I should still blush had I not long since gotten over blushing for anything that the United States government did in Indian matters." (216-217)
from Bourke: "A matter of great grievance with the Apaches, which they could not understand … was why their little farms … should be destroyed—as they were—and why their cattle and horses should be driven off by soldiers and citizens…. The whole scheme of Caucasian contact with the American aborigines—at least the Anglo-Saxon part of it—has been based upon that fundamental maxim of politics so beautifully and so tersely enunciated by the New York alderman—“The ‘boys’ are in it for the stuff.” The “Tucson ring” was determined that no Apache should be put to the embarrassment of working for his own living; once we let the Apaches become self-supporting, what would become of “the boys”?