Charlotte Knobloch is a Holocaust survivor and the former president of the Central Council of Jews in Germany. On a sunny Sunday afternoon just over a year ago, I was sure the turning point had finally come. In one of the largest mass protests in memory in Germany, more than 1.4 million people marched in cities across the country, including 100,000 in my hometown of Munich, in response to news reports of a secretive meeting in a manor outside Berlin in late 2023. There, luminaries of the extreme right along with several high-ranking state and federal MPs of the Alternative...