Dr. Ben Carson, a black Johns Hopkins University neurosurgeon and conservative favorite after challenging President Barack Obama at the National Prayer Breakfast, said Monday on "The Mark Levin Show" that white liberals are "racist."
"And you're attacked in many respects because of your race. You're not supposed to think like this, and supposed to talk like this. A lot of white liberals just don't like it, do they?" said Levin, host of the syndicated radio show.
"Well, they're the most racist people there are. You know, they put you in a little category, a little box -- you have to think this way. How could you dare come off the plantation?" responded Carson.
Carson is scheduled to speak at the Hopkins' School of Medicine commencement ceremony this year. A group of students petitioned to have him replaced as speaker after he compared gay marriage to bestiality and pedophilia last week. Carson said Friday that he was prepared to withdraw.
The school told HuffPost Friday that it had heard of no change in plans and said he was chosen for his medical accomplishments, not personal views.
Carson said Monday that it was "to be determined" whether he would speak and that he was going to "wait and see."