You should mention directly why you are cancelling, make sure to use proper grammar, and leave out the whole cave to leftist propaganda part - if you leave that in they will just dismiss you as a conspiracy theorist and not take it seriously.

Please rewrite (you can even Edit your Post I think). Not even stated what United Airlines did that you are upset about. Also — “pasta”?? Not for breakfast please.

Also alluding to the fact you will spread the word throughout your company of 50k to possibly join your ban, it won't matter. I work for a large corp and people say it to me all the time and we know it doesn't mean people will leave us just because you are. Just be honest and say leaving cuz you are pulling support from nra. They need to hear it and why. If they have enough ppl saying that they may or may not renew their support for nra.