That's a really awesome article, but to get people receptive to liberty they need to have good childhoods (take this for example: https://www.youtube.com/watch?v=8oLl4oppAv4).
People accept tyranny because they were raised by tyrants, and they were abused physically, emotionally, sometimes sexually. As opposed to getting angry about this, young children often dissociate and blame themselves (getting angry about parental abuse would be extremely risky in evolutionary terms.)
So I think the most important thing we could do (beyond promoting peaceful parenting in the west) is to, if we arrive in some third world country, think of how we can encourage good parenting when we arrive. Some initial thoughts:
-Parents that agree to take parenting classes get a discount at their local libertarian grocery (assuming we set one up)
-Parents that will sign a contract and accept scans on the brains of their for sign of childhood abuse will get a discount on say health insurance or some other good/service
We would also want to set up resources for education. A public library. A funny thought I had is basically offering all the smart kids in a village in a third world country access to a PC, paying for their education in a programming course, and then hiring them as programmers for like $15 an hour. I think something like that would be awesome for everyone involved, but the biggest issue would be the language barrier. If we could have people let us educate their kids in English etc. that would be useful.
But the reason for helping these people in this way is that they'll
1. Like us more for helping them. Friends are nice.
2. Their children, grandchildren, great grandchildren, and all their posterity will be more receptive to liberty if we can eliminate child abuse in one generation. Parents that negotiate, which is implicitly libertarian, raise a child that is healthy psychologically and not disposed to accept tyranny since they were not required to accept it for their survival as children.