You`ve grasped the righteous anger that`s going on right now. But the thing about that anger is that it dismisses the due process of law and turns it into vigilante justice. Lula`s still being investigated, nothing`s been found yet, but he`s already being sentenced by everyone.
Having said that, Lula isn`t doing himself any favors in the eyes of the public by being sworn as minister to escape prison for a few more days.
It reminds me of Steven Avery`s case (from Netflix`s Making a Murderer):
*You want to believe that he`s guilty, but the police screwed up the investigation in so many ways that you find it hard to belive that;
*You want to believe that he`s innocent, but some of his attitudes and things he says makes it hard for you to believe that too.
The same thing is happening between Lula/Dilma and judge Sergio Moro, all of them are riding a thin line of legality and in the grey area when it comes to ethics. Taking Lula as a minister is within Dilma`s legal rights as president to do, but how ethical is it? And how legal is leaking a conversation with the president that was tapped after the tapping was requested to stop, like judge Moro did?
You say that in the minds of the people it`s a war on corruption. No one likes corruption, of course, not even people defending Dilma right now (hell, they aren`t even all that happy with her actions during this second term!). But if Lula and Dilma are to be investigated, tried and sentenced/impeached, it needs to be done right - or else nothing will be truly solved.
I now leave you with
another Eliane Brum text that makes this point better than I ever could.