The problem with putting the likes of Warren Moon, Andre Reed, Claude Humphrey, Michael Irvin, etc. into the HOF is that you open up the doors for hundreds of other just as "qualified" players. As has been noted, there is at least as strong an argument for Dave Kreig and Ken Anderson as there is for Moon (or Jim Kelly, for that matter).
The real issue is the continued exclusion of so many, many white players at all positions who were simply more accomplished during their careers than the likes of Charlie Sanders, Aaneas Williams, Walter Jones, etc. In fact, the yearly HOF inductees have come to epitomize affirmative action. If you want to see examples of racial quotas on stage, look at that lone white inductee (more often a coach than a player) we see every year at the induction ceremony.
To return to the topic here, as Wes pointed out in another thread, we have two choices about Peyton Manning. Either we accept that the greatest regular season QB of all time just happens to play like a nervous rookie in every big game, throwing interceptions and wild passes he never normally does, or we have to ask whether he is performing so badly on purpose, to suit someone else's agenda.
This was the first "fishy" Super Bowl I've seen in a long time, where the referees were not the primary cause of concern (although they did, as predicted, allow the Seahawks to do their usual assault and maul thing). You cannot blame all this on Manning's black teammates. He played with the same mostly black squad all year, and broke all the passing records. He played horribly, and it's perfectly appropriate to ask why he does this routinely in the playoffs.