Populism: What is it... and why is it so unpopular within the establishment? Dated: December 7, 2019 by Sharyl Attkisson 2 Comments In my travels around the globe, I was able to work out a definition for populism and discover why it's so unpopular among many establishment political and media figures. Watch Sunday's Full Measure. (Special appearance below from my mom!) How to watch Full Measure Fight government overreach. Support free speech and free press. Donate to Attkisson v. DOJ here.