Anti-Semitism, it’s often said, is the oldest prejudice. The hatred of Jews has waxed and waned over the centuries, but appears to be back with something of a vengeance over the last few years, and especially the last few months.

For example, on Monday, February 27, over two dozen Jewish institutions across the country received bomb threats by anonymous phone calls. These included Jewish Community Centers, synagogues, retirement homes, day care centers, and Jewish educational institutions. These threats are part of a pattern of such threats, including multiple cemetery desecrations, that has been ongoing over the last few months. There have been 100 such threats to Jewish institutions just since the beginning of 2017.

Every time such a threat is called in, these institutions have to clear the building to determine if it is just a hoax. This means rounding up children, infants, the elderly, the infirm, and the developmentally disabled, getting them out of the building and, often, out in the cold, for the hour or two it takes to confirm all is clear. Although, thankfully, these have all turned out to be hoaxes, they still are taking a real toll on the Jewish community and the non-Jews who make use of these institutions. They are, I would argue, a form of terrorism.

The Why of Anti-Semitism

There has been much debate over why these threats have increased in recent months, and it seems plausible that the increased brazenness of the “politically incorrect,” including the rise of the alt-right, in the wake of the Trump campaign is probably one key factor. But anti-Semitism is not solely a problem on the Right. The political Left has had its own history of hatred for Jews, manifested in the present by the increased anti-Semitism of the radical Left in the context of criticism of Israel, especially through the Boycott, Divestments, and Sanctions (BDS) movement.

The enemies of liberalism have problems with everything Jews are associated with.The sources of anti-Semitism on both Right and Left are complicated, but one element on both sides is that Jews have historically been associated with important liberal ideas such as capitalism, entrepreneurship, cosmopolitanism, and free migration. These institutions have enabled massive social, cultural, and economic change, empowering the previously powerless all over the world, and threatening the old order.

The enemies of liberalism have problems with all of these, though the Right and Left differ on which bothers them the most. But for both, Jews can be easily seen as the enemies of those who find deep flaws with the classical liberal social order. When Jews are being threatened, it is usually a good sign that the foundations of liberalism are as well.

Jewish Anti-Capitalism

One point to note up front is that Jews themselves have a history of opposition to classical liberalism. Jewish intellectuals have had a long-standing attraction to socialism, starting of course with Marx himself. In particular, a number of the architects of the Russian Revolution were Jews or of Jewish heritage.

I raise this because I am not arguing that Jews were somehow reliably classically liberal over the last few centuries. And the fact that a good number of Jews were socialist, or that a good number of socialists were Jews, certainly doesn’t justify anti-Semitism by critics of socialism.

I do think that part of the attraction of socialism to Jews was its universalist aspiration in the form of the trans-national cosmopolitan vision of classical socialism along with its desire to “heal the world” and its strong ethic of concern for the least well-off. Those aspirations were shared by 19th-century classical liberals and were also part of Jewish practice. This universalism made Jews the target of the critics of classical liberalism from the Right, as well as the right-wing critics of socialism.

Jewish Pro-Capitalism

The association of Jews with capitalism, trade, and entrepreneurship is well known. The negative stereotypes of acquisitiveness, materialism, and selfishness that have long been part of anti-Semitism grew out of the truth that Jews were more likely to be traders and financiers than were other groups. Part of this was that as a nomadic people, Jews invested in their human capital rather than the physical capital they would have had to schlep around while getting kicked out of country after country.

(This might also explain why Jews have also been disproportionately entertainers and intellectuals. The skills for telling jokes, writing stories, making music, or working in the realm of ideas are ones that don’t require much in the way of physical capital in order to be successful.)

The Nazis, and other fascist movements, saw the Jews as the sort of rootless cosmopolitans who were unable to grasp the importance of blood and country.Jews were also often middlemen as a result of their nomadic existence and familiarity with so many parts of the world. Middlemen have always been suspect to the economically ignorant as far back as Aristotle, as they appear to profit by creating nothing tangible. This is particularly true when the middlemen are in financial markets, where they are not even trading something physical.

It’s no surprise, therefore, that hatred of capitalism has been accompanied by hatred of the Jews

Right-wing anti-Semitism, however, often draws upon these capitalist tropes as part of its hatred. But in this context, Jews are not so much seen as representative of capitalist exploitation that can be ended by socialism, but rather as an example of people who place love of money and their universalist aspirations above the love of their country and its citizens.

German anti-Semitism in the 20th century had roots in the argument that Jews had been “war profiteers” in World War I and had benefitted from the economic destruction that characterized the Weimar Republic period leading up to Hitler’s ascension to power. The Nazis, and other fascist movements, saw the Jews as the sort of rootless cosmopolitans who were unable to grasp the importance of blood and soil.

The modern version of this point, and one that is also found on the Left, is the “dual loyalty” charge laid upon pro-Israel Jews: they are beholden to Israel in ways that cause them to work against the interests of the United States.

The Why of Nationalism

One way to see the “national socialism” of various fascist movements is that they objected not to socialism per se, but to socialism’s attempt to put class ahead of race or ethnicity or nationality. To the fascists, German or Italian workers shared much more with German or Italian capitalists than they did with Russian or American workers. Marxian socialism drew the wrong battle lines.

And so it is today, as “economic nationalism” is on the rise globally and Jews have again become the most obvious target for an invigorated Right. Jews have always been the symbol of the cosmopolitan, the migrant, and the “rootless” trader. If you reject market-driven globalization, whether because you dislike markets or because you are a nationalist, you are going to have reasons to see Jews as symbols of what you reject. That opposition to immigration and global trade, and the market system that is at the root of both, would go hand-in-hand with anti-Semitism is hardly surprising.

It remains easier to scapegoat than to remember.The economic nationalism of Trump and a variety of European leaders is not inherently anti-Semitic, nor does it require that the leaders of such movements be anti-Semites, but the arguments of economic nationalism can easily empower the anti-Semitism of both the Right and Left. The leaders build in plausible deniability, knowing full well the nature of the forces they are unleashing but in ways that avoid direct responsibility.

How could they not know? We have centuries of experience to draw on, back to the ancient world through the Middle Ages all the way to the ghastly slaughter of the 20th century during which anti-Semitism nearly destroyed the whole of Europe itself. The costs have been unspeakable, and hence the vow to never forget. And yet, despite this history, the tendency to forget remains. To remember would require that we think more clearly about ideology and philosophy, human rights and dignity. Many people do not want to do that. It remains easier to scapegoat than to remember.

Admittedly, we liberals have a special grudge against anti-Semitism. It broke up the greatest intellectual society of the 20th century, shattering Viennese intellectual life, flinging even Ludwig von Mises out of his home and into the abyss. His books were banned, and those of many others too. He and so many fled for their lives but bravely rebuilt them in the new world that offered protection.

A Warning Sign

It has been said that Jews are the canaries in the coal mine of a liberal society: when they are under threat, it is a warning sign. The ongoing and increasing threats to Jewish communities here in the US, as well as similar trends across Europe, should have all of us worried. A world where Jews sing out in joy together and are unafraid to fly free is one far more safe from tyranny than one in which we Jews worry about dying in our own cages, as many of us are doing as the threats to our institutions have become more frequent and more brazen in recent months.

Watch how a society treats Jews and you’ll have an indicator of its degree of openness and respect for liberty. When Jews are being threatened, so are the deepest of our liberal values. The poisonous air from coal mining that killed canaries was invisible. The threats to Jews and to liberalism are not. Citizens of liberal societies dismiss or downplay those threats at our own peril.