We have no idea what, exactly, Hillary Clinton was thinking when she referred to the assassination of Bobby Kennedy in explaining her decision to keep on campaigning when it looks like there is virtually no hope of her winning the Democratic nomination.

(We’ve supported her decision to do so. This is a democracy, after all.)

But she could, at least, have apologized.

Instead, she issued one of those tedious non-apology apologies in which it sounds like the person who is being offended is somehow at fault: “I regret that if my referencing that moment of trauma for our entire nation, and particularly for the Kennedy family was in any way offensive.”

If?

Is it even possible that Mrs. Clinton thinks someone out there was not offended by her remark, Kennedy relative, Obama relative, or just plain folks?

Mrs. Clinton tried to excuse her inexcusable outburst by saying she was distracted by the shock of the news of Senator Edward Kennedy’s malignant brain tumor. But there was something familiar about what she said, and thanks to Ben Smith of Politico, we remembered what it was. Mrs. Clinton said basically the same thing in an interview with Time on March 6:

“I think people have short memories. Primary contests used to last a lot longer. We all remember the great tragedy of Bobby Kennedy being assassinated in June in L.A.”

What’s next? “Mistakes were made”?