Probably ironically you're arguing for a very authoritarian, nationalist view of the world where we can't allow any foreign information to hurt the fragile minds of our brittle citizens. In my opinion the tool called Facebook has shown us the real state of our society, the poor state of critical thinking in people and possibly the lack of morality in general. To call for simpler times back when only our own country was able to manipulate us, is a splash of romanticism.