If I wanted the human race to go extinct...
If I wanted the human race to go extinct, I would tell them to only think of their own interests, and not wonder about their own values and priorities.
I would tell them that markets are a deterministic thing that will lift all boats, be able to effectively manage everything so externalities don't exist, and we will be fine.
I would worship markets and reduce all values to that of monetary and make people believe there is a perfect correlation between wealth and one's own morality, so that people who are poor are seen as wicked and lazy. I would make it so that compassion is seen as weakness, and make it so viewing helping the disadvantaged is punishing the successful. And, I would worship those who have lots of money to, and make everyone think they can be part of the 1% if they just try hard enough.
I would have them not think it is possible for human beings to ever be a force and put everyone at risk.
I would have the economy tank, costing a lot of jobs, then use jobs as a trinket to hold out to ramrod any sort of thing that can cause a race to the bottom to happen, in the name of maximizing profits.
I would make people believe that those who question the current configuration don't understand the concept of progress and believe exponential growth is possible indefinitely, and also believe at the same time there are winners and losers and life, and there isn't enough resources to help anyone.
I would have people believe that government has no business doing welfare, and to leave it up to private charities, and then equate helping the poor as not a moral obligation, but something on par with stamp collecting, something nice to do if you want to.
I would have people believe the ability to get cheap electronic is more than enough justification for people lacking health coverage or children suffering from malnutrition.
I would have people believe their own suffering is the utmost importance, but suffering around the world is merely an annoyance, and mass starvation is nothing but Debbie Downer news.
I would not be my brother's keeper.
I would believe that the only answer is to shrink the government to the size of a bathtub so it could be drown.
I would support deficits in the name of preemptive wars based on false pretenses, but say that we must practice austerity when it ends up causing the disadvantaged to suffer.
In other words, I would do nothing except mind my own business and allow the B.S to continue to roll, as it is now.