Charles P. Pierce aptly describes Trump:

One of the major party candidates is a boastful ignoramus. This is now beyond dispute. This is the one immutable fact of the matter from now until November. This is now the challenge for our political system, including the journalists tasked to cover it. There no longer is any reason to give him the benefit of the doubt on any question. He will not pivot. He will not moderate. He will not learn. He knows everything he needs to know. Just ask him. He doesn’t know what he doesn’t know and he’s proud that he doesn’t know it.

esquire.com

This paragraph should be repeated every day, by every media person, print and broadcast alike, for the next two months.