"A picture is worth a thousand words." It's a well-worn phrase but there is special resonance when applied to editorial cartoons, a centuries-old tradition that is evolving as the media landscape itself does. Senior arts correspondent Jeffrey Brown takes a closer look for our series, Art in Action, exploring the intersection of art and democracy and our arts and culture series, CANVAS. PBS News is supported by - https://www.pbs.org/newshour/about/funders