You're skirting the issue. I know what guilt by association is, but I have no need for it to be explained to me in verbatim. On top of everything else, that analogy is a red herring. Such an analogy would be a fallacy of division and is furthermore based on false equivalence. Since for the sake of this analogy and this debate, it's okay for Bush to associate with Thurmond even though he's a racist, Obama to associate with Bill Ayers although he's a terrorist, and Mike Rowe with Glenn Beck who is a controversial at best TV personality. What is good for Bush and Rowe should be also true for Obama in your argument. The hypocrisy here is that you try to level Obama's association with Ayers to that of a relationship with a TV personality, but you attack others for slamming Obama's association while also 'defending' Rowe's association with Beck. I smell something fishy.
However that is wrong. Other than being a staunch racist, Thurmond didn't commit acts of terrorism, nor did he break the law as he knew it; and as I recall, he died in 2003. All Bush did was wish him a happy 100th birthday and throw a celebration, which was rather innocuous. That being said, Thurmond never endorsed Bush for President, and endorsed Dole over HW in 1988. I would condemn the inference of racism in that case because there is no evidence to suggest such. The thing same goes for Glenn Beck and Mike Rowe. On the other hand, Bill Ayers is a terrorist. Who on his own helped Obama's career off the ground. The fact he was accepting donations from this man shows he lacked the ability to temper his associations with unwieldy figures. You should never equate a terrorist with a racist nor a TV personality. Because all three share completely different ideas and worldviews. None of these are the same. The circumstances surrounding each are drastically different.
I know you really really really wanna mention every logical fallacy ever known along with several invented ones plus every Latin phrase you've ever heard of but it's really not that complex. We're talking about ONE logical fallacy -- Guilt by Association. That's it. And it works the same way regardless whether the players are Glenn Beck or Bill Ayers or Hulk Hogan or Wilma Flintstone. And it doesn't matter if the issue is a radio demagogue, a terrorist, a mass murderer or Mother Freaking Theresa. It's the same logic. There
is no "on the other hand Person B is a dick". As soon as you do that, you've committed the fallacy. Because if you've adjudged Person B as a dick, then you've also adjudged Person A as not-a-dick, or a relative undick. You can do that
independent of the relationship with the third party, but you cannot draw a conclusion from the association alone. That is, and always was, the point here.
Veni, vidi vici; legum servi sumus ut liberi esse possimus.