HUNTINGTON, W.Va. — In two years, President Trump has reshaped the idea of America for his supporters. They repeat his tweets. They parrot what he says in speeches. Their views on taxes, immigration and the news media are, word-for-word, his views on taxes, immigration and the news media — as endlessly repeated by Fox News.

Outside the Trump bubble, the president is fact-checked, scorned, doubted or challenged. His words — and there are many of them most days — appear to have lost their ability to persuade moderates and independents. To his critics, Mr. Trump is a liar and a fraud who is cheapening the office he holds and threatening the fabric of the nation’s democracy.

But inside the bubble, it is different. Inside, supporters share Mr. Trump’s view that men are the aggrieved gender. Inside, they vent their fury at Democrats and the news media using the president’s incendiary language. Inside, they harbor Mr. Trump’s conspiracy theories and echo his dark fear of immigrants.

Like Mr. Trump, the president’s most fervent supporters are not swayed by facts they consider inconvenient. Mr. Trump tells them the economy is the best the country has ever had, and they believe him, even if their communities are still struggling. The attacks on Mr. Trump only reinforce what they believe: He is on their side, no matter what.