Oh, how quickly some of us forget what we say.

Donald John Trump Sr., while campaigning for the presidency, excoriated President Barack Obama for his refusal to say three words in sequence: radical Islamic terrorists.

How can we know against whom we are fighting, he said, if we don’t call them out by name? The former president said he didn’t want to associate the terrorists with a religious faith, saying that they ignored the teachings of Islam, that they are thugs and murderers.

Well, guess what, dear reader. The 45th president of the United States committed precisely the same error of omission by refusing to call out the goons who provoked the riots in Charlottesville, Va. over the weekend and who themselves committed acts of domestic terrorism against their fellow Americans.

Trump instead equivocated in a disgusting manner by condemning what he called “violence and hatred on many sides.”

Mr. President, you failed yet another key test of leadership by failing to acknowledge that the white supremacists who gathered to protest the removal of a statue of Gen. Robert E. Lee were the provocateurs. They were the instigators of the riots. Their message drips with hate, with intolerance, with bigotry.

The president needed to call them out. He needed to mention the words “white supremacist hate groups.” The president needed to do the very thing for which he was critical of his predecessor.

If we’re going to fight against hate groups, then call them all out! By name! Can the president make the same argument to shield white supremacists and racists that his predecessor did regarding international terrorist organizations?

Does he dare do so?