I think it's more that justice means something different to different people. I think that vengeance can be justice.
Lets say a man goes to prison for 25 years for murder, and upon release the victim's husband kills him. The victim's husband gets revenge, but is it just?
Justice shouldn't be subjective, imo.
Also justice can't be objective. Put n people in a room and ask them what is just and you'll get n different answers.
When push comes to shove, how many of them even expect to get out alive? Is death penalty really just in such a situation?
The US just puts them in ADX Florence where they are tortured mentally (complete isolation, no end in sight, basically no human interaction at all). Which is probably what they deserve, but it’s still torture.
> how many of them even expect to get out alive?
What I would want is suffering for a long time. Now is that justice or vengance? I say it's both.
> Which is probably what they deserve
Is that not what you would describe as just?