I don't believe in weapons permits. The constitution is my permit.
If you are in peaceful possession of a firearm, and you are someone who can legally own a firearm, there should be no issue with open or concealed carrying in public.
Missouri is a really cool state: if you can legally own a gun, then you can legally carry a gun with a few exceptions such as on federal property, in schools, etc. However, in my home state of Florida, I would be in violation of the law carrying my gun around concealed in public, despite my never having materially commit any crimes with any of my guns.
(None of this is to speak poorly of Florida. Florida is a great state --- maybe it'd be better with constitutional carry!)
I was having a conversation with a girl yesterday about this in reference to arming teachers; if you're a teacher, you should not be required to arm yourself. However, if you as a private citizen wish to exercise your 2nd amendment rights and carry a firearm, then you should be allowed to, within whatever state laws you may have in place (keep in mind that this segment of the argument is material, not philosophical. I was not trying to convince her that the constitution is carte blanche for conceal carrying at this point.) If you wish to extend your rights into your school, then you should not be stopped from doing so.
Every gun owner in Hawaii should openly defy the 9th circuit's decision. If you can't carry concealed, and you can't carry openly, where can you carry?
Hawaii is may-issue state, with regards to firearms licenses. In practice, they are a no-issue state; often issuing liceneses only to former or active law enforcement, fomrer or active military, or politically connected individuals.
"The right of self defense is the first law of nature: in most governments it has been the study of rulers to confine this right within the narrowest limits possible. Wherever standing armies are kept up, and the right of the people to keep and bear arms is, under any color or pretext whatsoever, prohibited, liberty, if not already annihilated, is on the brink of destruction." -George St. Tucker