PC speak does not allow us to stereotype or assume that a certain ethnic group is committing most of the crime or most of a certain type of crime. So Freepers just insert the group that is least likely to be perps, the Amish. Instead of saying "blacks again" or "moslems again" they say, "must be those Amish (terrorists) again.
As an aside, I am looking to retire in an area that is drawing a lot of Mennonites. They make quiet neighbors who don't rob or steal very much. Ooops, sorry.
Northwest Arkansas? We've got plenty of Mennonites here, good people.