The USA is a center-right country.
Yet it still shifts consistently to the left. Moderates today would have been raging extremist liberals a hundred years ago. The problem with comparing the US to European countries is that the US has to deal with the many different backgrounds of its people, while European countries tend to be homogeneous. Therefore they can pretend that they are liberals who care for their fellow man. When you look at the situation on the ground, though, their self-image crumbles in the face of the experiences of immigrants and refugees. If you doubt this, just do a search for articles on immigrant communities' experiences in France or Germany.
Real Users find the one combination of bizarre input values that shuts down the system for days.