Is the world suffering from Cognitive Dissonance (CD)?

After all you said, you still didn't answer the question of which tribe has the right to their own culture. How is that determined? Do they all then just start a whole new culture? All you did was raise questions and call people ignorant. The fact is that everyone has to be validated to be mentally stable. So what is right and wrong? I did not see the movie but often times people have attacked other cultures because their resources were running out or their governments were oppressive so they move on to another place. Should the people who move on have just stayed put and died? What is right and what is wrong? Won't the more advanced culture always win out in such situations?