Quote 1
What they want is for me to truly take on the role they designed for me. The symbol of the revolution. The Mockingjay. […] I won't have to do it alone. They have a whole team of people to make me over, dress me, write my speeches, orchestrate my appearances – as if that doesn't sound horribly familiar – and all I have to do is play my part. (1.28)
Here it seems like Katniss is still being manipulated by others to fulfill a greater purpose. Before, she was deployed like a doll by the Capitol, and now she's being used in the same way to give a face to the group attempting to destroy the Capitol. In both cases, she's "play[ing a] part" that someone else wrote.
Quote 2
Yes, other people had plans, I think. Has Peeta guessed, then, how the rebels used us as pawns? How my rescue was arranged from the beginning? And finally, how our mentor, Haymitch Abernathy, betrayed us both for a cause he pretended to have no interest in? (2.25)
From a statement like this, we can tell how hard it has become for characters like Katniss and Peeta to trust anybody. The current regime that governs the Capitol and organized the Games obviously can't be trusted. But the revolutionaries also cannot really be trusted. And even Katniss and Peeta's "mentor," Haymitch, the one person they could try to rely on to get them through the games, lied to them all along.
Quote 3
Another force to contend with. Another power player who has decided to use me as a piece in her games, although things never seem to go according to plan. […] But she [President Coin] has been the quickest to determine that I have an agenda of my own and am therefore not to be trusted. She has been the first to publicly brand me as a threat. (5.1)
No matter what she does or how hard tries, Katniss keeps ending up in the same darn position. Over and over again, she becomes someone else's tool, manipulated for someone else's ends. She always seems to be hopping from one bad situation to another. Just when she thinks she's safe, she's in more danger than ever.