Part 2. This is the second part of Ken Burns’ three-night, six-hour study of Prohibition – and it’s the installment in which Prohibition, the banning of alcohol for general use in the 1920s, actually comes into practice. Part 1 was all about setting the scene, and explaining what came before – and doing that, so thoroughly, is what makes a Ken Burns documentary so singular, and so satisfying. That, and what Apple calls “the Ken Burns effect.” Check local listi