More than 20,000 people took part in left-wing demonstrations to mark International Workers’ Day, or Labour Day, in Berlin, Hamburg and other German cities on Wednesday. The traditional rallies by workers and activists were held this year amid the backdrop of the tensions surrounding the war in Gaza. Germany has banned or restricted pro-Palestinian demonstrations over the past seven months, often citing fears they could lead to incitement to hatred and anti-Semitic statements. Police said a demonstration organized by the German Trade Union Confederation in Berlin was temporarily halted due to …