So I have to say, with all respect to Mr. Trump’s easily offended supporters: For Donald Trump to suggest in his syntactically vague fashion that former President George W. Bush bears blame for Sept. 11, which occurred nine months after he assumed office; or for Donald Trump to revisit 9/11 to promote his thoughts on immigration, is frankly disgusting. His remark about President Bush is an utter falsity, and it demeaned the reality of what happened that day.

In this week’s Wall Street Journal/NBC poll of Republican presidential preferences, Mr. Trump sits on top with 25%. The polling suggests that this 25% spreads across many layers of the electorate. We are exploring the outer limits of how much falsity America’s “angry” people will choke down.

The phenomenon of internalizing rank falsity on behalf of presumably greater goals is bipartisan, as witness the massive Democratic effort this week to dismiss as a waste of time Thursday’s House hearing to establish where former Secretary of State Hillary Clinton was and what she was doing on an another Sept. 11, in 2012, when organized Islamic jihadists killed U.S. Ambassador Christopher Stevens and three other Americans in Benghazi.