Dont be too harsh blondechick. One day you may find yourself inclined to disagree with something and decide to protest about it. When that happens, and you believe in it, how would you feel if - and it happened to me, people slow down and spit at you, or abuse you. (ESSO protest about 2001)
All people are trying to do is raise the profile of global emissions problem - in this case I agree that Aircraft movements are the least of our worries - but at least we're enlightened enough as a society to allow this sort of thing to go on.