It always comes back to the technological singularity

All it comes down to is, don't tell people how to live their lives. Something I've always believed. Believe whatever you want, as long as it includes letting others behave how they want. I don't find anything anyone does offensive, just lame, unless it involves telling others what to do. This is why I hate aggressive advertising. Make a suggestion, but don't use mimetics or force to control people. That's one of the most offensive values.
Revealing the structure of the brain could result in some very mean things being done, but also engineered countermeasures, which will help us in the long run from the attacks we have now, coming from corporations.
We could solve of these attacks today if more critical thinking were applied, but the problem is there's too much critical thinking for everyone to do, in order to advance further, a system needs to be developed that doesn't require everyone to critically think everything. It's division of labour. The only fair way I can think of is to have an automated critical thinker based on measurable heuristics... a code. It's fair because all memes will be revealed, unlike human interactions. This is the real purpose of Free software. People could vote on what should be in the code, or segregate into multiple competing codes. This would replace the current political system.
Complain that that's too complicated? No more complicated than succeeding at the current political system, and is a much fairer way to choose who participates.
Clearly, the Internet is the enabler that for the first time makes this possible. May take a few generations to kill off the memes of the old ways. Some of them are remarkably persistent, and they should be treated as diseases. But it seems an evolutionary inevitibility that they will be conquered.
Building an AI is pointless. Instead, use technology to enable our brains to reach their full potential.