Homegrown ‘fake news’ is a bigger problem than Russian propaganda. Here’s a way to make falsehoods more costly for politicians.

[Commentary] State-sponsored propaganda like the recently unmasked @TEN_GOP Twitter account is of very real concern for our democracy. But we should not allow the debate over Russian interference to crowd out concerns about homegrown misinformation, which was vastly more prevalent during and after the 2016 election. The problem isn’t that we’re only willing to listen to sources that share our political viewpoint; it’s that we’re too vulnerable as human beings to misinformation of all sorts. Given the limitations of human knowledge and judgment, it is not clear how to best protect people from believing false claims.

Brendan Nyhan is a professor of government at Dartmouth College.

Yusaku Horiuchi is a professor of government at Dartmouth College.