Diverdave, as a Hawaiian Studies major from UH, allow me to correct your revisionist history of the Hawaiian people.  First, theories abound to the origin of Native Hawaiians - there's no hard evidence to back your claim that entire ethnic groups of people were being enslaved here pre-white plantation era Hawai'i.  

Second, Native Hawaiians - Kanaka Maoli - are the product of a number of waves of Pacific Island settlers.  It's hardly accurate to say that "Tahitians" or "Marquesas" were the first people here, when Native Hawaiians have genealogical ties to every wave of Pacific Island settlers pre-Cook arrival - Native Hawaiians/Kanaka Maoli were the first people here.  

The 1893 Overthrow disfranchised most Native Hawaiians from politics.  There's clear evidence of this throughout the last decade of the 19th century and it culminates in a majority of Native Hawaiians protesting the insurrectionist government in a formal petition to the US (aka Anti-Annexation Petitions).