Political ignorance and the closely related phenomenon of misinformation are serious problems. But most commentators are far quicker to identify them on the opposing side of the political spectrum than on their own. For that reason, prominent liberal political commentator Matt Yglesias deserves credit for recognizing that left-wing public opinion is far from immune to these dangers. In a recent post, he highlights two types of misinformation that are widely believed by left-liberals: climate catastrophism and massive overestimation of the number of unarmed African-Americans killed by police:
