Unfortunately Darren Wilson will never work in law enforcement again. Regardless of where he went if he was ever hired as a police officer then the media would be all over it. No community will want that kind of publicity and Wilson would immediately become a target all over again.
Maybe, maybe not. And i can think of a couple of communities who woudln’t care about the publicity and would defend him. A lot of small towns still think it is 1880’s Wild West.