I'm surprised that no-one responded to this more Swiftly.
I would mod ths funny if I had the points (though I do hope it is a literary joke and not a comment in support of the GP's idea)
Racism, censorship, homophobia, totalitarianism, anarchy, genocide, etc...these are really hard things to discuss with a group of high-school kids
For that reason I would add 'A Scanner Darkly' by Philip k. Dick. Themes related to drugs and identity are very relevant to today's teenagers. The book is rooted in the present, so is recognisable and there is little moralising. It is being told by someone who lived through and survived drug abuse and the final dedication to friends that didn't survive is particularly moving.
I see what you are intending here, but it doesn't work. The original bit refers to high proces for bullets, with the assumption that a bullet can only be fired once. A knife can be used multiple times, so you might hate 5000 people and decide to use it on each of them - 1 pound each is probably a bargain.
Serving coffee on aircraft causes turbulence.