If you feel this is discriminatory, that you were singled out because of age, race, sex then file here with EEOC.EEOC would investigate and issue a right to sue letter if they find in your favor.
If you believe that you have been discriminated against at work because of your race, color, religion, sex (including pregnancy, gender identity, and sexual orientation), national origin, age (40 or older), disability or genetic information, youcan file a Charge of Discrimination. All of the laws enforced by EEOC, except for the Equal Pay Act, require you to file a Charge of Discrimination with us before you can file a job discrimination lawsuit against your employer. In addition, an individual, organization, or agency may file a charge on behalf of another person in order to protect theaggrieved person's identity. There are time limits for filing a charge.
You should also file complaint with your union here.You may have appeal rights with union and employer as well.
I would consider doing both here to try and seek a better outcome.I am so sorry you have had this happen.
If you can positive rate 5 stars it is much appreciated.