Here's what we were told: An August motorcycle rally in Sturgis, South Dakota, helped spread COVID-19 to more than a quarter-million Americans, making it the root of about 20 percent of all new coronavirus cases in the U.S. last month. So said a new white paper from the IZA Institute of Labor Economics, at least. And national news outlets ran with it. "Sturgis Motorcycle Rally was 'superspreading event' that cost public health $12.2 billion," tweeted The Hill. "The Sturgis Motorcycle Rally...
