Today through Thursday, the Democrats present their 2020 Democratic National Convention. (Next week, the Republicans take their turn.) Usually, this is an opportunity to compare the platforms and politicians of the two parties – but this year, another compare-and-contrast exercise has to do with the way each party approaches staging, and televising, during this pandemic. C-SPAN, which features its Jack Webb Dragnet “Just the facts, ma’am” approach to political c