I've also noticed that the term "willful ignorance" gets thrown around a lot more nowadays. There is a sizeable contingent of people who are so convinced that what they believe is the absolute truth that any disagreement or critique must therefore be out of malice rather than genuine disagreement.
I think they are less confident in their own ideas (politicians aren't even required to state what policies they stand for anymore!) than they are confident that the other side (or at least the cartoonish version of it presented to them via allied media) is wrong/evil.