Drum says: "This chart largely explains why sky-high unemployment hasn't produced any real sense of urgency in our political class. It's because unemployment is high among people who don't vote and low among people who do."
Klein says: "If you assume that the political system is particularly attuned to their concerns [of college grads who faces a 5% unemployment rate], the current focus makes more sense."
In simple terms, they both say: don't vote -> higher unemployment. (because the political system properly represents the interests of those who vote.)
Look at the chart again.
In simple terms, this says: higher unemployment -> don't vote.
Who's right? Statisticians typically stay out of this type of debate. We can see the correlation; we cannot see the direction of causation.
In much of the current debate over tax cuts and unemployment insurance, there is widespread confusion equating college grads and super-rich people (earning over $250K). The fact that most super-rich people have college degrees does not imply that most college grads earn $250K-or-higher incomes. Almost 30% of Americans have college degrees but only 1% or so earn over $250K. For some perspective, see my previous post.
This type of confusion is very common: the fact that most suicide bombers are Muslim does not imply that most Muslims are suicide bombers; the fact that many scam artists have high IQ does not mean high IQ people are scam artists; the fact that quite a few geniuses are borderline crazy does not mean all crazies are geniuses; the fact that lots of great runners come from Jamaica does not imply that all Jamaicans are great runners; ...