I don't know what race has to do with this, but if you feel there is a racial issue you can contact the department of Licensing And Regulatory Affairs (LARA) here:
Licensing and Regulatory Affairs
Ph: (517) 373-1820
They will also tell you how to file a complaint against a realtor, if you so choose.
If you had a valid purchase agreement, satisfied all of the contingencies, including the financing contingency, and were able to close in accordance with the purchase agreement, you can sue for damages, but you may have trouble proving damages.
I would be happy to take a look at all of your paperwork free of charge and give you a recommendation. Feel free to call my office tomorrow, or email me what you have at firstname.lastname@example.org. I am a licensed attorney as well as a licensed real estate broker. I will be able to point you in the right direction.