Most likely a civil rights attorney. Search for a few in your area, and meet with them to discuss the particulars of your case. Most offer free consultations. I would offer you one but you are far away from me. Most civil rights attorneys also handle these cases on a contingency-fee basis, which means you don't pay their fees, they only get paid if they win. But this forces them to only take really strong cases that have a good chance of winning. Go find out if yours is one of those. If several attorneys tell you that you have no case (or that you have a good one) that is a good indication they are right. Good luck.
Michel & Associates, PC
All my comments here are intended for general legal purposes. None of my comments here establish an attorney-client relationship with anyone. None of my comments should be relied on in taking legal action without first consulting an attorney.