A recent piece in The Atlantic by Peter Beinart filled in a cognitive gap in understanding how a large minority of U.S. citizens continue to support an abjectly incompetent, almost certainly criminal, willfully ignorant, and generally hateful man as president. The article Why Trump supporters believe he is not corrupt makes the argument that when Trump defenders concern themselves with the idea of corruption they are not thinking of political corruption so much as corruption of the purity.
This is an interesting essay in The Guardian on the idea of quarantining extremist ideas. A non-trivial proportion of the population regards the media as having a responsibility to represent all idea with equal validity. So the appearance of extremist ideas in the press, even if they are treated negatively, results in more legitimacy than they are due. The authors in this essay make a case for quarantining these extreme ideas, refusing to cover them.