Religion and justice have a deep connect, but not in the way you might expect. People are religious because of their faith in an extended definition of justice - one that stretches past death and into future lives. A lot of people wouldn't be religious if their religion didn't promise them justice in magical afterlives. Justice is actually an entirely human construct. It does not exist in nature. Here's a short audio essay on how justice and our expectation of it keeps religion alive.
Return of the Hindu Atheist
Our previous caller, the Neo Charvak is back. But the confusion remains. Still no clear definition and still a lot of prevarication.