Terrible management style and sometimes racist - Assurance Manager Rehmann Employee Review

I am a black employee in this company, and i was only hired because i have some experience in banking, peers were nice to me, but principals injected a negative feedback against me since i had a clash with one of the clients. There was a small problem where the client complained against me (i felt due to racism). Client complained, management turned against me, and they started to make me problems. i want to file a legal complaint against the company.