Again, I think it goes back to both the irrationality of the guilters and to "political" affiliations (so to speak). If the guilters hate on Rudy, they can't play the race card against the innocenters, without looking hypocritical.
I agree, you have a good point. What about going after Rudy's foster/adoptive father, though? Isn't he well-to-do?
It's an interesting question that deserves exploration. At bottom we may find that many guilters hate women even more than they hate blacks. Or maybe they are so racist they assume blacks should be expected to commit rape/murders, so for Rudy to do it is not as "wrong" as for Amanda and Raffaele to do it.