Perhaps you are right about that Black, however if they capture and execute Greyback do you not think it will only fuel further prejudice against Werewolves? They are already feared and giving our kind a new source of hatred for them will not help the matter.
But I do agree it is a bit wrong to suggest that, but the as I told Dorcas I do not believe the whole of the Prophet thinks that way and they have been known for blowing ideas out of proportion.
Although you should know, it is not only one Werewolf that has done this either.