In the era of social media, antisemitism and Holocaust denial are no longer hidden in the margins, spewed by fringe hate groups. From Ye – formerly known as Kanye West – and basketball player Kyrie Irving to members of Congress on both sides of the aisle, well-recognised personalities have echoed antisemitic ideas, often online. Beyond high-profile figures, there are clear signs that antisemitism is becoming more mainstream. In 2021, using the most recent data available, the Anti-Defamation League reported that antisemitic incidents in the US reached an all-time high. Eighty-five percent of Americans believe at least one anti-Jewish trope, according...