Donald J. Trump scored perhaps the biggest knee-slapper of the evening at his debate Sunday night with Hillary Rodham Clinton.

He said she’d “be in jail” if he were president.

Why? Well, I’d like to visit that notion for a moment.

Trump has been accusing Clinton of breaking the law while she was secretary of state. He and other Clinton critics have presumed her guilt for unspecified “crimes.” Trump also has tried and convicted Clinton’s husband, the former president of the United States, of various crimes against women. He called President Clinton the “worst abuser” of women in the history of the American politics.

To punctuate whatever point he sought to make Sunday night, Trump brought four women with him to St. Louis, all of whom have accused the Clintons of various crimes against them.

That’s it, then! They’re guilty because these women said so.

How about holding on for a second.

The FBI examined whether Hillary Clinton broke any laws by using her private e-mail account while serving as secretary of state. She testified before Congress for 11 hours over that very issue. FBI Director James Comey — the Republican career prosecutor who runs the agency — determined that there was nothing on which he could prosecute Clinton. In other words, she didn’t break any laws.

It doesn’t stop there.

Congressional critics now have accused Clinton of perjuring herself in her testimony. That’s it. They have leveled the accusation. Have they brought formal charges? No. Have they produced proof of her committing a crime? No again.

They’ve just leveled the accusation.

As for her husband … and the women whom Trump flew to St. Louis to create a spectacle in the debate hall, they, too, have leveled accusations.

Has anyone brought formal charges against the former president? No. Has any of them testified — under oath — in a courtroom to accuse the president of raping, groping or otherwise abusing them? No.

He, too, is presumed guilty of these accusations. I hesitate to call them “charges” because, I must stipulate again, he’s never been charged with a crime.

What we are witnessing is a perversion of the legal system that is supposed to presume someone is innocent until prosecuting authorities can prove guilt.

Both of these individuals — Bill and Hillary Clinton — have their flaws. I don’t for a second deny that. Their flaws are personal and political.

However, in all the accusations brought before both of them, only Bill Clinton has been charged formally with a “high crime and misdemeanor.” It involved lying to a federal grand jury about his relationship with a young White House intern. The House of Representatives impeached him for it.

Then he was acquitted of the charges by the Senate. He was allowed to finish his second term as president.

Are these two individuals guilty of any of the crimes others have accused them of committing? No.

They deserve the same presumption of innocence to which all American citizens are entitled.

Moreover, the know-nothings who keep saying otherwise ought to adhere to the laws they allegedly cherish.