User blog comment:NickFusi0n/A Theory on The Coordinate and The Wall Titans/@comment-93.209.16.74-20140525064024/@comment-25358468-20140526054634

Reiner, Bertolt and Annie's motives were to destroy the walls and everyone inside of them, Reiner said so to Eren. According to Armin, Annie led the Titans into the walls when Bertolt breached it for the first time. If they wanted the people inside of the walls to be free of government control, there are a lot less violent and homicidal ways to do that. This theory is really unsupported and filled with holes, let alone being really boring. Also, we have seen multiple times that BRA have gone out of their way to kill as many people within their range as possible.

Also, BRA are no cowards. You can't call them cowards because they really do believe that humanity is done for, and we don't know who gave them orders and why; more than likely there are a lot more antagonists that our heroes will have to deal with in the upcoming volumes.

I don't think the central government is all that powerful. To the people, yeah, but to Titans, no. If anything they're just an irritation to the soldiers trying to win the war. The real deal is Captain Ackerman, and he's not even part of the government.

Most likely there is a hidden humanity outside the walls trying to cause genocide for all the people within the three walls.