Is populism a threat to democracy

In this stream I show a couple of clips from a Oxford Union debate between Nancy Pelosi and Winston Marshall.

Nancy Pelosi argues that populism is a threat to democracy due to voters being manipulated 5/6 - https://www.youtube.com/watch?v=VW8SnMRhExA

Winston Marshall argues that populism is not a threat democracy, but rather is democracy itself 6/6 - https://www.youtube.com/watch?v=vFmjgbdNNgw