Many religions offer the promise of a supreme and perfectly fair authority. Such an eternal and just arbiter offers relief for people who live daily under unjust, biased and/or inhumane authorities.
Consider who is keeping Christianity and/or Catholicism alive in many parts of the United States. Undocumented migrants live in terror of being seized and punished solely for wanting to work in a productive economy and to raise their children in a safe society. They are like other groups around the world, in the Middle East, in Africa, in Pakistan, who turn to religion to restore their faith in a just order.
Rather than sating their thirst for justice, such a faith must also whet it. Perhaps, they take religion seriously because it takes seriously the matter of justice. Some religious citizens could thus be motivated to participate in a coalition that addresses the glaring injustices in civil society.
For example, those bringing light to the plight of the 99% might consider using posters that remind TV viewers that the Christian God expects more from the 1 percent than largesse. Something about camels being passed through the eye of a needle. Or about being generous when you yourself have received the generosity of others.