Populism? What is it? Two people will come up with three different definition of what populism is. 

When so-called 'progressives' or 'liberals' decide something by majority vote, it is refereed to as 'democracy'. When so-called 'conservatives' decide something by majority vote, it is called 'populism'. In general, the word 'populism' is just another ideological label to dehumanise the opponent, and feel justified  to not to have to listen to the 'other', to one another.