On Trump's inexperience:
There is nothing on Mr. Trump’s résumé to suggest he could function successfully in Washington. He was staked in the family business by a well-to-do father and has pursued a career marked by some real estate successes, some failures and repeated episodes of saving his own hide while harming people who trusted him.
The lack of experience might be overcome if Mr. Trump saw it as a handicap worth overcoming. But he displays no curiosity, reads no books and appears to believe he needs no advice. In fact, what makes Mr. Trump so unusual is his combination of extreme neediness and unbridled arrogance.
The Post calls Trump a serial liar.
He is desperate for affirmation but contemptuous of other views. He also is contemptuous of fact. Throughout the campaign, he has unspooled one lie after another...
The editorial calls Trump ignorant:
Given his ignorance, it is perhaps not surprising that Mr. Trump offers no coherence when it comes to policy.
The Post says Trump is a flip-flopper on multiple issues, his gut feelings are mostly wrong and he is filled with prejudice and hatefulness:
According to the Post, Trump is ignorant about the Constitution:
Most alarming is Mr. Trump’s contempt for the Constitution and the unwritten democratic norms upon which our system depends. He doesn’t know what is in the nation’s founding document. When asked by a member of Congress about Article I, which enumerates congressional powers, the candidate responded, “I am going to abide by the Constitution whether it’s number 1, number 2, number 12, number 9.” The charter has seven articles.
The Post labels Trump a threat to democracy.
Mr. Trump has encouraged and celebrated violence at his rallies. The U.S. democratic system is strong and has proved resilient when it has been tested before. We have faith in it. But to elect Mr. Trump would be to knowingly subject it to threat.
The paper says it has not hesitated in the past to criticize Hillary Clinton, and will do so in the future if warranted, but of the present candidates, including the Libertarian and Green party third party candidates, only Trump is a "clear and present danger" to the Constitution.
The Post says the Republican party has let "the lunatic fringe onto center stage". Trump had to rely on family and employees to make his case at the convention because, except for Bob Dole, "the living Republican presidents and presidential nominees of the past three decades all stayed away."
On the global threat Trump poses:
[Republicans] put forward a candidate who mimics the vilest propaganda of authoritarian adversaries about how terrible the United States is and how unfit it is to lecture others. He has made clear that he would drop allies without a second thought. The consequences to global security could be disastrous.
Trump's three most prominently featured children will undoubtedly read this editorial. Will they be ashamed? I sure would be if Trump were my father.