Digging up trenches: populism, selective mobility, and the political polarization of Italian municipalities / Luca Bellodi (Bocconi University), Frédéric Docquier (LISER, University of Luxembourg and IZA), Stefano Iandolo (University of Salerno), Massimo Morelli (Bocconi University and CEPR), Riccardo Turati (Universitat Autónoma de Barcelona and IZA) ; IZA Institute of Labor Economics