If that's all you've got it's going to be tough. Can you make out any of it yourself? Do the letters resemble the name of the county, city, or state you live in?
Really hard to say from that image. It does kind of resemble a generic "fake" police badge. Mall cop/security guard type. But then the fake ones are supposed to resemble the real thing.
The word on top MIGHT be security. It also MIGHT almost anything else. If you don't mind sharing the details of your harassment it might shed some light on whether you were dealing with LEO, a security guard or a complete imposter.
It was from Twatter, that's the best I can do from his picture. I don't want to dox him, I just want to know if he's a real LE before I tell him how I really feel.
Twitter instead of Twatter maybe. Sounds like someone is giving him grief on a social media account, and he's trying to figure out if he's a real cop, rent-a-cop or something else.........