In some ways, it was the most memorable line of Monday's presidential debate.
It came after Donald Trump had stumbled through a non-responsive response to a simple question: Why did it take him so long to concede President Obama was born in the USA? In reply, Mr. Trump congratulated himself for getting Mr. Obama to produce his long-form birth certificate, falsely blamed Hillary Clinton for starting the racist campaign and touted his great relationship with black people.
And Ms. Clinton, smiling, said, "Just listen to what you heard."
They ought to put that on a billboard; it could encompass Mr. Trump's whole campaign. It certainly encompasses his debate...