For the first time in modern history, far-right and populist parties are simultaneously topping the polls in Europe’s three main economies of Germany, France and Britain. […] More recent societal stressors such as the coronavirus pandemic and war in Ukraine have further increased the allure of populism, according to Hans-Jakob Schindler, the senior director of the Counter Extremism Project, a nonprofit international group. But populist parties in Europe have also harnessed social media more powerfully than their more centrist opponents, he said.