Maybe if they spoke slower and used smaller words?

Gerard Alexander writes at the Washington Post asking why liberals are so condescending.

Every political community includes some members who insist that their side has all the answers and that their adversaries are idiots. But American liberals, to a degree far surpassing conservatives, appear committed to the proposition that their views are correct, self-evident, and based on fact and reason, while conservative positions are not just wrong but illegitimate, ideological and unworthy of serious consideration. Indeed, all the appeals to bipartisanship notwithstanding, President Obama and other leading liberal voices have joined in a chorus of intellectual condescension.

....

This worldview was on display in the popular liberal reaction to the Supreme Court's recent ruling in Citizens United v. Federal Election Commission. Rather than engage in a discussion about the complexities of free speech in politics, liberals have largely argued that the decision will "open the floodgates for special interests" to influence American elections, as the president warned in his State of the Union address. In other words, it was all part of the conspiracy to support conservative candidates for their nefarious, self-serving ends.

It follows that the thinkers, politicians and citizens who advance conservative ideas must be dupes, quacks or hired guns selling stories they know to be a sham. In this spirit, New York Times columnist Paul Krugman regularly dismisses conservative arguments not simply as incorrect, but as lies. Writing last summer, Krugman pondered the duplicity he found evident in 35 years' worth of Wall Street Journal editorial writers: "What do these people really believe? I mean, they're not stupid -- life would be a lot easier if they were. So they know they're not telling the truth. But they obviously believe that their dishonesty serves a higher truth. . . . The question is, what is that higher truth?"

In Krugman's world, there is no need to take seriously the arguments of "these people" -- only to plumb the depths of their errors and imagine hidden motives.

The thing is, conservatives generally believe liberals are mistaken.  Liberals generally believe conservatives are evil.  They are wrong, but in their case, it is by deliberate design.