There's been a brainwashing (or lack of brain washing) in the US in the last few decades; suddenly the right wing thinks everyone should be armed at all times, romantic notions of the "Wild West" and Steven Seagal. They don't realize how many of them will NOT WIN every gunfight, and it only takes one. It's mind-blowing the way people think sometimes. It's grown into a political issue, a machismo issue, and to me, in many cases, a racial issue, and a mental issue. (Actually, "mental" covers most of those bases - it doesn't have to mean stark raving mad, just having psychological defects, insecurities, irrational fears (phobias) etc. So what that boils down to is the "other" reason for carrying a gun to the park, besides murderous intent, is a distorted notion of self-protection, no matter how irrational.
...unless they think they need to carry it into Walt Disney World.