What a great series!
I just finished watching this over the course of two days. Set in a fascinating world 1000 years from now where humans manifesting psychic powers is commonplace.
Spoilers about the ending below!!
Don't say I didn't warn you!!
When the truth was finally revealed about what happened in the last few hundred years I found these new psychic humans utterly despicable tyrants. What they did to the non-psychic humans just to maintain their superiority was unforgivable and completely puts into context what happened over the shows run. I ended up siding with the others in the end.
This is the sign of a good anime, one that is able to evoke powerful emotion in the viewer and this show has it in spades.