Ideological engineering and social control: A neglected topic in AI safety research? by Geoffrey Miller Sep 1 2017

 This would allow improved 'anti-terrorism' protection, but also much easier automated monitoring and suppression of dissident people and ideas. Over the longer term, inverse reinforcement learning could allow AI systems to learn to model the current preferences and likely media reactions of populations, allowing new AI propaganda systems to pre-test ideological messaging with much more accuracy, shaping gov't 'talking points', policy rationales, and ads to be much more persuasive. 

https://forum.effectivealtruism.org/posts/oXzRPoCmYkEySevj8/ideological-engineering-and-social-control-a-neglected-topic