Sometimes people forget the terrible consequences that will happen for the sake of the immediate benefits, like many regulations in life, they all have a way of seeing and approaching whether it is accepting or rejecting it, it is also a how to bring balance to life. As the story you mentioned really, I find that this problem comes from small numbers, but when they have the opportunity to rise up more with money, relationships cause influence they can influence think of the majority, and the thing to do is to always spread the right things in life without pursuing personal gain.
Today I just happened to read an article about Ronald Reagan speaking about the issue of aliens that will help people to unite, although this is just a hypothesis but I also think the point is that we need to more solidarity in the world, not competition as it is now, perhaps without the appearance of aliens, we have killed each other.