Nothing the left hates more than a conservative black. Has to do with group politics and the left's war on individuality (or as they call it, this cult of the individual). A black person is expected to follow the prescribed groupthink, else he is condemned as an Uncle Tom or worse who doesn't appreciate what the left has done for him and therefore doesn't realize that they still know what's best for him. That goes for all individuals, really; the left knows what is best for you based on your identity group, of course. Whether it be based on your skin color or your sexual orientation or just whether you wear your genitals on the outside or the inside, the left knows best what you should believe and what choices you should make.
Oh look, your keyboard moved - and you lied. But I'm being redundant.
As with many lies - probably most - there's a grain of truth under it.
Let's get to that first. Yes, there is a special resentment for that 'extra' level of wrong that includes a sort of hypocrisy, when someone who should ESPECIALLY know better about a wrong does it, compared to someone who does the same wrong, but might have ignorance as an 'excuse'.
So yes, when people see a woman come out saying a 'woman's place is barefoot in the kitchen doing as he man tells her to', a gay person who says they're wrong for being gay and should stop, a black person who says the property rights are much more important, allowing a lunch counter to refuse blacks, than non-discrimination, a crack addict who says we should have harsher drug laws, and so on, yes, there's an added bit of kick for that reason.
With Thomas, there are added elements that the Republican used him so cynically as a clearly poorly qualified choice as a way to 'get around' the issue of appointing a justice so many felt should represent African Americans, replacing Thurgood Marshall, a civil rights supporter; resented that he was not only the same as others who adopt wrong, oppressive views, but one who does so that harm 'his own race' and 'cost them' the seat going to someone who would have represented civil rights like Marshall.
But the resentment would be practically the same if it had been a white person who was like Thomas - and there would have been different new complains about his race.
Werepossum exaggerates the issue to the point of dishonesty.
Thomas in fact has things that make him different from others - his especially poor qualification, his background of sexual harrassment against Anita Hill he dishonestly got past (though it made him the most narrowly approved justice in history IIRC), his being the only justice to basically never ask oral questions, his wife's blatant political activism, for some. Werepossum would like to lie that all those things are 'race'.
In fact, Werepossum is determined to lie that it's about race because it gives him some naughty pleasure in 'turning around' the accusation, wrongly, that's made about his side much of the time, accurately - and in so doing implies bigger lies such as that many valid cases of racism raised by the left are not correct. He's trying to dodge things.
Any time a member of a group 'sells out' that group to the power oppressing it, there are special resentments from that group (and those who supports its rights). If the holocaust let some Jews avoid execution if they served the authorities to assist against other Jews, if some Native Americans served the US troops in tracking down tribes to kill or relocate, if Palestinians take benefits to collaborate with the IDF, if an American knowingly helped the 9/11 attackers avoid detection, or many other examples, these groups each feel a special outrage towards the person. And so for some it is with Thomas, who benefits with the prestige of the Supreme Court in exchange for backing the views of a party 90% of African-Americans oppose and who so many view as hostile to African-Americans. That's the nugget of truth, but it's only one part of the issue Werepossum exaggerates.
There's no oppression as he describes IMO that blacks aren't 'free' - but there is criticism when it appears they 'sell out' by selling out other blacks. You don't seen the same type of criticism you do about Thomas about other blacks who have joined the right, though most blacks disagree with them; you don't seen it about Colin Powell, about Condoleeza Rich, about the Godfather former CEO now in the presidential race.
This further betrays Werepossum's false claims, his false attacks not only against Thomas critics, but the implied attack that any 'race issues' are phony.