[TheRealThing]

What I am suggesting is that a great deal of wealth, not all, and I am talking about power elite wealth, not "did great in a small town" wealth, is arrived at, at least to a degree, through "dishonest scales." I am here not speaking about using government as some sort of legislative Robin Hood. The economic injustice decried by the rider of the black horse is foreshadowed prophetically many, many times.

Well a legislative Robin Hood is exactly what you argue for. And no, the black horse rides only once, during The Great Tribulation, and the Scripture never refers to him in any other context.