Mastery and DriftA revelatory look at modern liberalism's historical evolution and enduring impact on contemporary politics and society. Since the 1960s, American liberalism and the Democratic Party have been remade along professional class lines, widening liberalism's impact but narrowing its social and political vision. In Mastery and Drift, historians Brent Cebul and Lily Geismer have assembled a group of scholars to address the formation of "professional class