We live in a neoliberal world. They currently have what they see as a good reason to be smug, their ideas are reflected back at them by the most powerful members of society. So those ideas can build and hold political power.
They just don't fully recognise that they can't build and hold it that way.
Edit: by "they", of course, I mean workers with liberal politics. Liberal politicians and elites actually do have good reason to be smug, the world economy and political system currently serves their interests.


talking about the very special 9/11 West Wing episode which is good as a standalone