David, this is only one example of the horrific shit that humans do - and we do not only do it in the physical, we do it within ourselves as well. The level of change required is enormous - but that doesn't mean that it's impossible. The whole purpose of Desteni is to show that human nature is not fixed/unchangeable - it is simply what we have accepted and allowed ourselves to be.
In terms of solutions, because the issues are so interconnected and so complex there is no one solution that can be applied in all scenarios. The closest thing I see to a holistic solution is walking through the mind with the Desteni tools - but this is only a viable option if/when Desteni becomes widely accepted and applied - so it is far from an "easy" solution. There are many people who are trying different things to make a difference in the world - so on the one hand, people more and more want to change. But then on the other hand, we're still awful fucking bastards most of the time. I know, it sounds like I am saying there is no hope - but if I truly felt like there was no chance that we can make this world best for all then I wouldn't be here, walking as I do now, committed to Desteni and living the tools every moment of every day. Humanity CAN change. Each of us who walks the Desteni tools and principles becomes an example to the people around us. We become pillars of our communities (whether internet community or physical community) and stand as the living proof that humanity can be better.
So, I am sorry that I cannot give you an easy, simple or straightforward answer - the reality is that we are not in an easy, simplistic or straightforward world. Our minds are twisted, tricky, dead-clever and absolutely focused on self-preservation - so yes, it will be fucking difficult - but when has that ever been an acceptable excuse?
Change can be created through the equality equation - 1+1+1+1+1+1+1+1+1+1... While large-scale or instantaneous global change would be fan-fucking-tastic - it's not all that likely to happen. So we do what we can, where we can, as best as we can.