Workers at a half dozen Amazon distribution centers in Germany and Italy staged protest "Black Friday" strike to demand better wages from the American online giant. The German union has been leading a push since 2013 for higher pay for some 12,000 workers in Germany, arguing Amazon employees receive lower wages than others in retail and mail-order jobs. Germany is Amazon's second-biggest market after the United States. The strikes in Germany are expected to end Saturday. The Italian strike was called for permanent workers. The unions advised workers who are on short-term, work-on-demand contracts to stay on the job, so they wouldn't risk losing future gigs.