Please help

I am just wondering if anyone has knowledge how to fnd lawyer who gives justice to poor people , infact for free.
Does anyone has idea or has gone through such a situation.
Does anyone has idea regarding the possible outcomes for law suit regarding social issues?
Can foreigner file a case inregard of their visa status in US law court?
What and who will pay for the compensation?
If a filer and to whom a case is filed reside in different state, and to multiple people, how things will work out?

Any help , suggestion will be greatly appreciated.

Thank You