Defiance is Donald J. Trump’s signature attitude; it was the defining characteristic of the 2016 Trump campaign. Trump defied the political establishment, the news media, conventional wisdom, common decency, former President George W. Bush, Senator John McCain (R-Ariz.), former GOP presidential nominee Mitt Romney and even the pope.

Trump’s supporters admire his defiance, which they see as fearlessness. They share his contempt for the establishment, the news media, educated elites and the norms of political correctness, all of which helps explain why Trump’s base is sticking with him now that he has antagonized the entire national establishment.