Switzerland: Cradle Of Populism?

"It kind of started here," is how Steve Bannon, former Trump White House Chief Strategist kicked off his European tour earlier this year in Zurich. Did the type of nativist populism now sweeping much of the west and challenging the existing European order really begin in Switzerland? As part of BBC News's "European Identity Crisis" season, Gabriel Gatehouse meets the controversial Swiss billionaire dubbed "Trump before Trump," and reports on a new grassroots movement challenging populism on the streets and in the polling booths.