Holding placards and banners condemning the far-right Alternative for Germany or AfD party, tens of thousands rallied across Germany, chanting slogans such as, “Never Again is Now,” “Against Hate” and “Defend Democracy.” The large crowds were the latest in a series of demonstrations that have been gaining momentum in recent days. Police said a Saturday afternoon protest in Frankfurt drew 35,000 people. Demonstrations in Stuttgart, Nuremberg and Hannover, among other cities, also drew large crowds. A similar demonstration Friday in Hamburg, Germany’s second-largest city, drew what police said w…