What is populism? (New [edition].)

Donald Trump, Silvio Berlusconi, Marine Le Pen, Hugo Chávez - populists are on the rise across the globe.

But what exactly is populism? Should everyone who criticises Wall Street or Washington be called a populist?

What precisely is the difference between right-wing and left-wing populism?

Does populism bring government closer to the people or is it a threat to democracy?

Who are 'the people' anyway and who can speak in their name?

These questions have never been more pressing. In this provocative book, Jan-Werner Müller argues that at populism's core is a rejection of pluralism.