I have seen management make it so miserable for D.O.D. employees that they got so disgusted they up and quit. As I stated before it is almost impossible for a boss to fire a D.O.D. employee. As I have seen with my very own eyes, the reason this was done by management was to make room for one of thier "kronies"!
I suspect that this is the scenerio in your case.
My last boss tried this tactic on me! I was the only caucasion employee in our shop, the rest {Boss included} bieng of "Other" ethnicity. This job bieng in South Texas I`ll leave it to your imagination to guess which. They often spoke thier native language in my presence when they didn`t want me to know what the subject was, {little did they know that I, originaly bieng from Southern Ariz. knew exactly what they were conversing about.} *SMILE*. Fortunately for me there were other options before contacting an attorney in the D.O.D. {E.E.O. M.E.R. {management employee relations} and the Union}. The outcome of my action at least let them know that they had to be very careful about what was said and in what language around me, and it also let them know that I {as well as upper Management and the union know they were "gunning" for me, and that I was willing and able to obtain legal counsel if need be. This curtailed the bosses actions somewhat for a short period of time but didn`t do much to ease the stress level on my part. They did try to make it miserable enough that I quit but NO CIGAR! {not my style} As I stated before I enjoyed the time I spent out of his presence in the sunshine policing ciggie butts for Wayyyyyyyy more money than the grounds keepers were making!
Moral ..... you CAN make a purse out of a sows ear!