Ok, I'm pretty sure that almost anyone in this forum can't answer this question better than me. First of all, not everyone in Hawaii is Hawaiian. Hawaiian is an ethnicity and all Hawaiians are extremely proud of their roots. The reason why Hawaiians may be racist or territorial is because the "haoles" or foreign people took away the land that was rightfully theirs.
http://www.stlyrics.com/songs/i/israelk ... 39741.html
Israel Kamakawiwoole, probably one of the greatest Hawaiian musicians who passed away, wrote the song in the link above, which represents what all Hawaiians feel about industrialization. This song brings tears to some peoples' eyes no matter how many times you listen to it. Its a powerful song that all Hawaiians would agree on.
Some Hawaiians are even pushing for justice and for a separate nation, or sovereignty. Thats how strongly they feel about others taking their home away. Hawaiians are not necessarily racist because I'd estimate about 95% of all Hawaiians are not pureblood or kanaka maoli. However, if you have Hawaiian blood, you consider yourself very Hawaiian and you take pride in your cultural background. Hawaiians may just have negative thoughts about tourists because they associate tourists with the people who stole their land but Hawaiians realize that most of the economy in Hawaii is run off of tourism. In fact, some Hawaiians depend on tourists for their businesses, such as a Hawaiian luau, surfing lessons or hula lessons.
Don't let what one person tells you persuade you from the truth. Hawaiians just have very strong bonds and roots, but most just want their rights that they should rightfully have, but don't. So if you ever meet a Hawaiian, many of them like to stick with their own race, but you can easily become a good friend because of the outside influence that they know cannot be avoided. All Hawaiians are not bad like some may think and as long as you understand their feelings and situation, you will come to appreciate just how honorable it is to be Hawaiian (I would love to be Hawaiian).
What I said may not be true, but this is my perspective, especially since I know many Hawaiians and attend a school populated by many Hawaiians. Sorry for the long post.
Aloha and Imua!