Why in the 21st century are we still talking about the political Left and Right?

In a world where Donald Trump embraces anti free-trade protectionism and "leftish" governments are going heavy on law and order, do the old political labels of Left and Right really make sense? Is it time for a new way of thinking and talking about political difference? And how do ordinary voters actually choose their political positions? Are their decisions based on ideology or simple tribalism?GuestsDr Gregory Millard – Associate Professor, Department of Political Science, Kwantlen University, CanadaDr Simon Otjes – Assistant Professor, Institute of Political Science, Leiden University, The NetherlandsDr Verlan Lewis – Stirling Professor of Constitutional Studies, Utah Valley University. Visiting scholar, Center for American Political Studies, Harvard UniversityFurther informationLewis, Verlan – The Myth of Left and Right