Suppose you were a vast global conspiracy plotting to foster discord among Americans. How would you approach your task? You might try to spread some salacious but dubious accusations—say, that a politician is a “devotee of Bigfoot erotica.” But that particular charge would feel kind of stale, since a Democratic congressional candidate already lobbed it at her rival this summer. Maybe you could think bigger, and make a video that tries to red-bait a candidate by linking him loosely to George Soros and, from there, even more loosely to “antifa.” But that would be superfluous because the...
