It wasn't "race agitators", it was Darren Wilson himself who said his encounter with Mike Brown was like "a small child being confronted by Hulk Hogan." Once you've revealed yourself to be that much of a pussy, which other cop in his or her right mind would want to partner with you?Quite expected. It was stated before the grand jury decision that this would happen. He stated it basically in his TV interview.
Obviously at this point he does not have a future in policing Ferguson. Now that his reputation has been dragged completely through the mud by the race agitators it is doubtful he could get a police job anywhere. He will need to find a new career.