This is one of the most fascinating posts I have come across since becoming "active" six months ago on GN, so thank you whitewave and daphnedill for bringing it up and, hopefully, making us think through this important topic with clarity and without vitriol.
I do agree that there are examples of right-wing and left-wing populism so it is not exclusively a right-wing movement. Looking at the USA in 2015/2016, you could say that Bernie Sanders initiated a left-wing populism and Donald Trump a right-wing one( offspring of The Tea Party Movement). In Europe, we have examples of both, as well.
Of course, depending on our individual political persuasion, we can analyse and interpret these movements as we see them but it is great to discuss the phenomena.
I, for one, am finding this very instructive and one of the reasons I wanted to join GN in the first place, much as I love chatting about my children , grandchildren and other grandmotherly pursuits!