It shows what is happening, but not enough solutions to make it change. Even though Friere & Gramsci suggested education would be the way to create the necessary revolution this hasn't really made a big enough impact to give a society a completely better & fairer way of life.
No. Justice is only possible when causation can be established.
In this case there are too many causes. Often to determine causation a 'but for..' test is used. But for the actions of the politicians who changed the financial lending rules would the GFC have happened? But for the bank...