I agree about the second part. But the first part is pretty obvious, isn't it?
"Regular people using lie detectors on politicians" does seem impossible, but "government officials and big corps using lie detectors on regular people" (to any interesting extent) is far from clear, it's easy to see how it could be successfully resisted by appealing to human rights intuitions, or channeled towards significantly different forms of use, escaping your description. (Even China's regime is not certain to persist in relevant respects on this timescale.)
I have just received a survey questionnaire regarding future directions in EU (European Union) research funding, and thought it would be interesting to see how LessWrong would answer the main question:
Imagine that EU funding is available for one ambitious, visionary project extending beyond 2020.