Sometimes I'm less concerned about the total outcome as I am that the rules claimed are the rules observed. To use a relationship example I don't get mad so much because you cheated on me so much as because you lied about exclusivity.
I don't get mad that I pay taxes, but that I also don't see societal improvement happening proportional to what I pay... (and that there always seems to be none left in the communal basket when I have a bad day...)
That makes perfect sense to me: a feeling of consistency is the strongest component of justice (or injustice).
Here’s my 0.02c: you can be justified in perceiving injustice (against yourself, or more generally) and simultaneously be unjustified in reacting to that injustice. Less roundabout: two wrongs don’t make a right, and what is right is virtuous in its course of action (in the sense that acting right encourages other people to act right, when doing so isn’t tied to a negative emotion like shame.)
I don't get mad that I pay taxes, but that I also don't see societal improvement happening proportional to what I pay... (and that there always seems to be none left in the communal basket when I have a bad day...)
See?