You can't make this sort of stuff up.
Ex-Pennsylvania state trooper claims he was fired over Ebonics
During his probationary period, he wrote reports poorly, sometimes using "ebonics".
(Ebonics, for those not familiar, is the sort of lazy grammar/slang that uneducated people, mostly black, use when they want to set themselves apart from everyone else. Many take pride in sounding like fools and it's not uncommon for better-educated black youths to be bullied for not talking like this in some urban areas.)
He also demonstrated a "lack of solid job knowledge and basic police skills" and other "officer/public safety concerns".
Reading between the lines, he was a train wreck who was unable to do the job to such a degree that the state chose to cut it's losses and fire him instead of trying to continue remediating him. And it appears that they worked with him for 18 months, right up until the end of his probation, at which point they'd have had to keep him forever if they didn't terminate him.
As expected, he's suing, claiming, among other things, that being fired for not being up to the job was embarrassing. Not only does he want his job back with back pay, but damages as well. And of course he's saying that he was fired because he's black.
My answer would be that he was probably hired because he was black, but fired because he was incompetent.