I think one of the big injustices of our time we will look back to with disgust (like slavery 200 years ago) is not allowing people to go wherever they want to go. What gives us any right to deny people to live anywhere on the planet they want to?

It’s just that I absolutely do not believe that abolishing (all or large parts of) government is any kind of solution to this.

(And, yes, this would have often dire economic consequences for some. Just as abolishing slavery had dire economic consequences for some. Doing the right thing isn’t free.)

The whole point of my comments is that what is generally considered immoral (threatening and killing) becomes 180 degrees different when some man in a nice costume says so. Don't you think someone was bullshitting us?

In my view, murder is never justified. Even in self-defense. However, in case of self-defense, you don't have much choice (and people around might understand you), while guys in the airport don't have any kind of attack and everyone can be peaceful and nice to each other and walk their way.