Which preposition to use with hawaiians

against Occurrences 1%

Was this a remnant of a forgotten cannibalistic habit, or a protest of the Tahitians and Hawaiians against the custom as not being Polynesian, but a concession to a fashion adopted in fighting the Fijian anthropopogi?

in Occurrences 1%

"Thefts, robberies, murders, infanticide, licentiousness of the most debased and debasing character, burying their infirm and aged parents alive, desertion of the sick, revolting cruelties to the unfortunate maniac, cannibalism and drunkenness, form a list of some of the traits in social life among the Hawaiians in past days.

Which preposition to use with  hawaiians