What can stop the rise of populism in Germany and elsewhere?

Populist parties are on the rise in Germany as they are all over the world. What can open societies do to protect democracy?

source https://www.dw.com/en/what-can-stop-the-rise-of-populism-in-germany-and-elsewhere/a-70585362?maca=en-rss-en-ger-1023-rdf