Outbursts of antisemitism have often been harbingers of societies in deep trouble and omens that extremism and violence are imminent. In the United States there is a climate of growing fear. A widening problem in the United StatesIn recent years, antisemitism has often been driven in the United States by far-right groups. But reaction to the deepening crisis in Israel and Gaza has shown that antisemitism is also boiling on the far-left. After all, the United States recently suffered a mob attack on Congress fueled by false claims of a stolen election.