The Republican presidential candidate Ben Carson said Sunday on NBC’s “Meet the Press,” “I would not advocate that we put a Muslim in charge of this nation. I absolutely would not agree with that.”

At first, he stood by that outrageously prejudiced remark, but after coming under fire from not only Muslim groups but also many conservatives, he soon tried to walk it back, to cushion and to caveat it.

On Monday night, he posted a message on Facebook that included this line: “I could never support a candidate for President of the United States that was Muslim and had not renounced the central tenant of Islam: Sharia Law.”

Then on Tuesday, at a news conference, Carson said, “It has nothing to do with being a Muslim.” He continued: “That was the question that was specifically asked. If the question had been asked about a Christian and they said, ‘Would you support a Christian who supports establishing a theocracy?’ I would have said no.”

Only his original comment was unambiguous: It had everything to do with being a Muslim. And it was bigoted.

But this isn’t Carson’s first time at this rodeo. This has become his modus operandi.

Carson has a way of speaking in a flat, sing-song-y tone while flashing his toothy, 100-watt smile, that can be utterly disarming, if not completely charming.

His undeniable pedigree as an acclaimed pediatric neurosurgeon adds an air of gravitas to his nonsensical utterances and provides some cover for what can be poisonously harmful, over-the-line invectives.

Carson says in low register what others shout in anger, and he gets a bit of a pass because of the discordant message and method of delivery.

Just because a person is soft-spoken doesn’t mean that he is well-spoken.

Since Carson used his 2013 speech at the National Prayer Breakfast to criticize President Obama’s policies to his face, he has been lionized in conservative quarters.

It’s not that others have not criticized the president before or since, but it was the particularity of the racial imagery of Carson’s critique --- one smart, accomplished black man undressing another in public --- that gave it particular power. It insulated the attack from racial characterization. He said things from the lips of a black conservative that roiled the minds of white ones. And it represented a prominent breaking of ranks, a slicing off of black solidarity from not only Democratic loyalty but also from fidelity with this president.

Since then, Carson’s rhetoric has seemed to get only more reckless.

He has called Obama a psychopath and a liar. He has compared Obama’s supporters to Nazi sympathizers. He has said that Obamacare is the “worst thing that has happened in this nation since slavery,” even worse than the terrorist attacks on 9/11.

He has asserted that being gay is “absolutely” a choice as evidenced by people who “go into prison straight --- and when they come out, they’re gay.” He later apologized in a statement that read in part:

“I do not pretend to know how every individual came to their sexual orientation. I regret that my words to express that concept were hurtful and divisive. For that I apologize unreservedly to all that were offended.”

And even when his rhetoric isn’t reckless, it can be wrongheaded.

He has used the shallowness of race as a biological construct to disavow and diminish the depth of racism as a very real cultural construct.

And he makes the mistake many people do, of using his personal story of success as a societal prescription for all problems. I have always held that working hard and following the rules are their own reward, but I am not naive enough to believe that personal behavior can completely countervail structural oppression.

Carson knows that his outrageous antics in his role as the anti-Obama are a most profitable enterprise. He mixes political critique with Christian theological messaging to rake in quite a bit of money on the lecture circuit. As Politico reported in July, Carson “brought in nearly $2 million delivering inspirational speeches to faith-based groups like Christian high schools and pregnancy centers in 2014,” with speaking fees ranging “from $12,320 to $48,500.”

This is a sad turn --- spurred, I believe, by profit motive --- for such a great legacy.

I, like many other African-Americans, had come to see Carson as a hero before his foray into politics because of the resonance of his personal story . a poor inner-city child being raised by a driven single mother who valued education and instilled in him a sense of character that would allow him to become a staggering success.

Carson was the embodiment of possibility. His 1990 book, “Gifted Hands,” was required reading for many young people.

But as a political figure, his stature is diminished as he reveals himself to be intolerant, bordering on soft bigotry, and also reckless and needlessly inflammatory. No one can discount what Carson accomplished professionally, but those accomplishments must now stand shoulder to shoulder with this new persona: whisper-soft purveyor of hyperbolic hucksterism.