His behavior was so shocking and so un-presidential that it was widely and resoundingly condemned by both Democrats and Republicans alike in Congress. Not one single public official outside of the administration spoke up in defense of the President's behavior.
There are so many reasons why this is wrong that it's difficult to know where to begin. There was no reason for him to do this. It shows a man who is dangerously petty and thin-skinned. It also shows a man who is dangerously mentally unstable. It shows a man who isn't emotionally fit to be President.
How could he react calmly and rationally during a true national crisis when he can't even handle minor criticism?
The New York Times published an excellent op-ed yesterday (link here) about how this latest incident demonstrates, once again, Trump's fundamental lack of decency and his craven disrespect for other people.
The piece quotes prominent law professor Joan Williams who said: "Trump’s persistent insults to high-profile women play to that part of his base that has long been incensed at a definition of political correctness that includes women, L.G.B.T.Q. people, immigrants and other groups -- but leaves out working-class whites nursing the hidden injuries of class."
Trump's behavior yesterday underscores, once again, that he almost certainly is what mental health professionals call "a pathological narcissist," someone who is devoid of empathy toward others (details here). That means he will throw anybody and everybody under a moving bus who doesn't grovel before him.
Yesterday's tirade shows the time has come to seriously consider removing Trump from office as soon as possible with the 25th Amendment (details here), a more expeditious process than impeachment.
There is just no other reasonable choice at this point. Trump isn't going to change, and he must not be allowed to continue to damage America's standing in the world.