America's trucker convoy is a liberal punchline. But it shouldn't be.

It’s hard to take the "People’s Convoy" trucker caravan seriously. Starting as a protest against Covid mask and vaccine restrictions, it launched after most mandates had been lifted. Many of the convoy’s big rigs, pickups and SUVs are covered with QAnon conspiracy references. Convoy organizers promised to shut down Washington D.C. Instead, they parked their trucks at a stock-car racetrack in western Maryland and then did a few gaffe-filled laps around the D.C. Beltway. The convoy has been lampooned in late-night talk show monologues and newspaper op-eds, and parodied in countless memes. The consensus is that it has...